Bump copyright date
diff --git a/examples/in-memory.c b/examples/in-memory.c
index 1a6f9fa..19f60ee 100644
--- a/examples/in-memory.c
+++ b/examples/in-memory.c
@@ -1,6 +1,6 @@
 /*
   in-memory.c -- modify zip file in memory
-  Copyright (C) 2014-2019 Dieter Baron and Thomas Klausner
+  Copyright (C) 2014-2020 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/examples/windows-open.c b/examples/windows-open.c
index 31704a6..d01ea06 100644
--- a/examples/windows-open.c
+++ b/examples/windows-open.c
@@ -1,6 +1,6 @@
 /*
   windows-open.c -- open zip archive using Windows UTF-16/Unicode file name
-  Copyright (C) 2015-2019 Dieter Baron and Thomas Klausner
+  Copyright (C) 2015-2020 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/compat.h b/lib/compat.h
index c16da7b..47c28fd 100644
--- a/lib/compat.h
+++ b/lib/compat.h
@@ -3,7 +3,7 @@
 
 /*
   compat.h -- compatibility defines.
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip.h b/lib/zip.h
index 4bf2d02..4b9b9e9 100644
--- a/lib/zip.h
+++ b/lib/zip.h
@@ -3,7 +3,7 @@
 
 /*
   zip.h -- exported declarations.
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_add.c b/lib/zip_add.c
index ef04f1e..dd6dcbc 100644
--- a/lib/zip_add.c
+++ b/lib/zip_add.c
@@ -1,6 +1,6 @@
 /*
   zip_add.c -- add file via callback function
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_add_dir.c b/lib/zip_add_dir.c
index 9999c8d..41de94b 100644
--- a/lib/zip_add_dir.c
+++ b/lib/zip_add_dir.c
@@ -1,6 +1,6 @@
 /*
   zip_add_dir.c -- add directory
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_add_entry.c b/lib/zip_add_entry.c
index 1c9fcff..6f3c162 100644
--- a/lib/zip_add_entry.c
+++ b/lib/zip_add_entry.c
@@ -1,6 +1,6 @@
 /*
   zip_add_entry.c -- create and init struct zip_entry
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_algorithm_bzip2.c b/lib/zip_algorithm_bzip2.c
index 7434e54..ebc68d9 100644
--- a/lib/zip_algorithm_bzip2.c
+++ b/lib/zip_algorithm_bzip2.c
@@ -1,6 +1,6 @@
 /*
   zip_algorithm_bzip2.c -- bzip2 (de)compression routines
-  Copyright (C) 2017-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2017-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_algorithm_deflate.c b/lib/zip_algorithm_deflate.c
index 99d8a59..8707eec 100644
--- a/lib/zip_algorithm_deflate.c
+++ b/lib/zip_algorithm_deflate.c
@@ -1,6 +1,6 @@
 /*
   zip_algorithm_deflate.c -- deflate (de)compression routines
-  Copyright (C) 2017-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2017-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_algorithm_xz.c b/lib/zip_algorithm_xz.c
index 5317a93..f0c2fd3 100644
--- a/lib/zip_algorithm_xz.c
+++ b/lib/zip_algorithm_xz.c
@@ -1,7 +1,7 @@
 /*
   zip_algorithm_xz.c -- LZMA/XZ (de)compression routines
   Bazed on zip_algorithm_deflate.c -- deflate (de)compression routines
-  Copyright (C) 2017-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2017-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_algorithm_zstd.c b/lib/zip_algorithm_zstd.c
index a921f6e..a7e2d67 100644
--- a/lib/zip_algorithm_zstd.c
+++ b/lib/zip_algorithm_zstd.c
@@ -1,6 +1,6 @@
 /*
   zip_algorithm_zstd.c -- zstd (de)compression routines
-  Copyright (C) 2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2020-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_buffer.c b/lib/zip_buffer.c
index 3bfcc82..4e5783e 100644
--- a/lib/zip_buffer.c
+++ b/lib/zip_buffer.c
@@ -1,6 +1,6 @@
 /*
  zip_buffer.c -- bounds checked access to memory buffer
- Copyright (C) 2014-2020 Dieter Baron and Thomas Klausner
+ Copyright (C) 2014-2021 Dieter Baron and Thomas Klausner
 
  This file is part of libzip, a library to manipulate ZIP archives.
  The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_close.c b/lib/zip_close.c
index 1bc7c78..a990c2f 100644
--- a/lib/zip_close.c
+++ b/lib/zip_close.c
@@ -1,6 +1,6 @@
 /*
   zip_close.c -- close zip archive and update changes
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_crypto.h b/lib/zip_crypto.h
index c42bc7b..ac6e109 100644
--- a/lib/zip_crypto.h
+++ b/lib/zip_crypto.h
@@ -1,6 +1,6 @@
 /*
   zip_crypto.h -- crypto definitions
-  Copyright (C) 2017-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2017-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_crypto_commoncrypto.c b/lib/zip_crypto_commoncrypto.c
index f4c37d9..58b797d 100644
--- a/lib/zip_crypto_commoncrypto.c
+++ b/lib/zip_crypto_commoncrypto.c
@@ -1,6 +1,6 @@
 /*
   zip_crypto_commoncrypto.c -- CommonCrypto wrapper.
-  Copyright (C) 2018-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2018-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_crypto_gnutls.c b/lib/zip_crypto_gnutls.c
index 84b256d..406fceb 100644
--- a/lib/zip_crypto_gnutls.c
+++ b/lib/zip_crypto_gnutls.c
@@ -1,6 +1,6 @@
 /*
   zip_crypto_gnutls.c -- GnuTLS wrapper.
-  Copyright (C) 2018-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2018-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_crypto_gnutls.h b/lib/zip_crypto_gnutls.h
index 65cf62e..6743186 100644
--- a/lib/zip_crypto_gnutls.h
+++ b/lib/zip_crypto_gnutls.h
@@ -1,6 +1,6 @@
 /*
   zip_crypto_gnutls.h -- definitions for GnuTLS wrapper.
-  Copyright (C) 2018-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2018-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_crypto_mbedtls.c b/lib/zip_crypto_mbedtls.c
index 6aeb020..09cdf09 100644
--- a/lib/zip_crypto_mbedtls.c
+++ b/lib/zip_crypto_mbedtls.c
@@ -1,6 +1,6 @@
 /*
   zip_crypto_mbedtls.c -- mbed TLS wrapper
-  Copyright (C) 2018-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2018-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_crypto_mbedtls.h b/lib/zip_crypto_mbedtls.h
index 0b06e99..a82b2fd 100644
--- a/lib/zip_crypto_mbedtls.h
+++ b/lib/zip_crypto_mbedtls.h
@@ -1,6 +1,6 @@
 /*
   zip_crypto_mbedtls.h -- definitions for mbedtls wrapper
-  Copyright (C) 2018-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2018-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_crypto_openssl.h b/lib/zip_crypto_openssl.h
index be0a8ca..d959b8d 100644
--- a/lib/zip_crypto_openssl.h
+++ b/lib/zip_crypto_openssl.h
@@ -1,6 +1,6 @@
 /*
   zip_crypto_openssl.h -- definitions for OpenSSL wrapper.
-  Copyright (C) 2018-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2018-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_crypto_win.c b/lib/zip_crypto_win.c
index 6f9a596..8202bfe 100644
--- a/lib/zip_crypto_win.c
+++ b/lib/zip_crypto_win.c
@@ -1,6 +1,6 @@
 /*
   zip_crypto_win.c -- Windows Crypto API wrapper.
-  Copyright (C) 2018-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2018-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_crypto_win.h b/lib/zip_crypto_win.h
index 9d36891..be9fdc6 100644
--- a/lib/zip_crypto_win.h
+++ b/lib/zip_crypto_win.h
@@ -1,6 +1,6 @@
 /*
   zip_crypto_win.h -- Windows Crypto API wrapper.
-  Copyright (C) 2018-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2018-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_delete.c b/lib/zip_delete.c
index 4ff4c1a..7d82d9a 100644
--- a/lib/zip_delete.c
+++ b/lib/zip_delete.c
@@ -1,6 +1,6 @@
 /*
   zip_delete.c -- delete file from zip archive
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_dir_add.c b/lib/zip_dir_add.c
index da1e4a4..89eb432 100644
--- a/lib/zip_dir_add.c
+++ b/lib/zip_dir_add.c
@@ -1,6 +1,6 @@
 /*
   zip_dir_add.c -- add directory
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_dirent.c b/lib/zip_dirent.c
index 1cb4c98..a7c336b 100644
--- a/lib/zip_dirent.c
+++ b/lib/zip_dirent.c
@@ -1,6 +1,6 @@
 /*
   zip_dirent.c -- read directory entry (local or central), clean dirent
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_discard.c b/lib/zip_discard.c
index a29a288..42f4eb8 100644
--- a/lib/zip_discard.c
+++ b/lib/zip_discard.c
@@ -1,6 +1,6 @@
 /*
   zip_discard.c -- discard and free struct zip
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_entry.c b/lib/zip_entry.c
index 837b59c..dfc6419 100644
--- a/lib/zip_entry.c
+++ b/lib/zip_entry.c
@@ -1,6 +1,6 @@
 /*
   zip_entry.c -- struct zip_entry helper functions
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_error.c b/lib/zip_error.c
index adaa40b..6c7e49f 100644
--- a/lib/zip_error.c
+++ b/lib/zip_error.c
@@ -1,6 +1,6 @@
 /*
   zip_error.c -- zip_error_t helper functions
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_error_clear.c b/lib/zip_error_clear.c
index 9bcd506..f655539 100644
--- a/lib/zip_error_clear.c
+++ b/lib/zip_error_clear.c
@@ -1,6 +1,6 @@
 /*
   zip_error_clear.c -- clear zip error
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_error_get.c b/lib/zip_error_get.c
index 9d0ec03..f310ed3 100644
--- a/lib/zip_error_get.c
+++ b/lib/zip_error_get.c
@@ -1,6 +1,6 @@
 /*
   zip_error_get.c -- get zip error
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_error_get_sys_type.c b/lib/zip_error_get_sys_type.c
index 86d03cf..d9eb47a 100644
--- a/lib/zip_error_get_sys_type.c
+++ b/lib/zip_error_get_sys_type.c
@@ -1,6 +1,6 @@
 /*
   zip_error_get_sys_type.c -- return type of system error code
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_error_strerror.c b/lib/zip_error_strerror.c
index 7570aaf..c283d88 100644
--- a/lib/zip_error_strerror.c
+++ b/lib/zip_error_strerror.c
@@ -1,6 +1,6 @@
 /*
   zip_error_sterror.c -- get string representation of struct zip_error
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_error_to_str.c b/lib/zip_error_to_str.c
index 70756c0..f13ac19 100644
--- a/lib/zip_error_to_str.c
+++ b/lib/zip_error_to_str.c
@@ -1,6 +1,6 @@
 /*
   zip_error_to_str.c -- get string representation of zip error code
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_extra_field.c b/lib/zip_extra_field.c
index 0887397..8983f75 100644
--- a/lib/zip_extra_field.c
+++ b/lib/zip_extra_field.c
@@ -1,6 +1,6 @@
 /*
   zip_extra_field.c -- manipulate extra fields
-  Copyright (C) 2012-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2012-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_extra_field_api.c b/lib/zip_extra_field_api.c
index cf2b0e7..9a828e4 100644
--- a/lib/zip_extra_field_api.c
+++ b/lib/zip_extra_field_api.c
@@ -1,6 +1,6 @@
 /*
   zip_extra_field_api.c -- public extra fields API functions
-  Copyright (C) 2012-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2012-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_fclose.c b/lib/zip_fclose.c
index 4d6fc59..3984b98 100644
--- a/lib/zip_fclose.c
+++ b/lib/zip_fclose.c
@@ -1,6 +1,6 @@
 /*
   zip_fclose.c -- close file in zip archive
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_fdopen.c b/lib/zip_fdopen.c
index 14f243f..c2708c6 100644
--- a/lib/zip_fdopen.c
+++ b/lib/zip_fdopen.c
@@ -1,6 +1,6 @@
 /*
   zip_fdopen.c -- open read-only archive from file descriptor
-  Copyright (C) 2009-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2009-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_file_add.c b/lib/zip_file_add.c
index 40386c0..02b6599 100644
--- a/lib/zip_file_add.c
+++ b/lib/zip_file_add.c
@@ -1,6 +1,6 @@
 /*
   zip_file_add.c -- add file via callback function
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_file_error_clear.c b/lib/zip_file_error_clear.c
index 863dae7..b47e3d2 100644
--- a/lib/zip_file_error_clear.c
+++ b/lib/zip_file_error_clear.c
@@ -1,6 +1,6 @@
 /*
   zip_file_error_clear.c -- clear zip file error
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_file_error_get.c b/lib/zip_file_error_get.c
index a477976..cce1ac2 100644
--- a/lib/zip_file_error_get.c
+++ b/lib/zip_file_error_get.c
@@ -1,6 +1,6 @@
 /*
   zip_file_error_get.c -- get zip file error
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_file_get_comment.c b/lib/zip_file_get_comment.c
index 746186a..59b768a 100644
--- a/lib/zip_file_get_comment.c
+++ b/lib/zip_file_get_comment.c
@@ -1,6 +1,6 @@
 /*
   zip_file_get_comment.c -- get file comment
-  Copyright (C) 2006-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2006-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_file_get_external_attributes.c b/lib/zip_file_get_external_attributes.c
index 6d4e0e4..f642918 100644
--- a/lib/zip_file_get_external_attributes.c
+++ b/lib/zip_file_get_external_attributes.c
@@ -1,6 +1,6 @@
 /*
   zip_file_get_external_attributes.c -- get opsys/external attributes
-  Copyright (C) 2013-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2013-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_file_get_offset.c b/lib/zip_file_get_offset.c
index eb9b017..c9c8fd8 100644
--- a/lib/zip_file_get_offset.c
+++ b/lib/zip_file_get_offset.c
@@ -1,6 +1,6 @@
 /*
   zip_file_get_offset.c -- get offset of file data in archive.
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_file_rename.c b/lib/zip_file_rename.c
index a830b6a..d65f64a 100644
--- a/lib/zip_file_rename.c
+++ b/lib/zip_file_rename.c
@@ -1,6 +1,6 @@
 /*
   zip_file_rename.c -- rename file in zip archive
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_file_replace.c b/lib/zip_file_replace.c
index c824d7f..a8cf86c 100644
--- a/lib/zip_file_replace.c
+++ b/lib/zip_file_replace.c
@@ -1,6 +1,6 @@
 /*
   zip_file_replace.c -- replace file via callback function
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_file_set_comment.c b/lib/zip_file_set_comment.c
index 8c76f25..0276a47 100644
--- a/lib/zip_file_set_comment.c
+++ b/lib/zip_file_set_comment.c
@@ -1,6 +1,6 @@
 /*
   zip_file_set_comment.c -- set comment for file in archive
-  Copyright (C) 2006-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2006-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_file_set_encryption.c b/lib/zip_file_set_encryption.c
index 6025e4a..aa0d707 100644
--- a/lib/zip_file_set_encryption.c
+++ b/lib/zip_file_set_encryption.c
@@ -1,6 +1,6 @@
 /*
   zip_file_set_encryption.c -- set encryption for file in archive
-  Copyright (C) 2016-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2016-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_file_set_external_attributes.c b/lib/zip_file_set_external_attributes.c
index 0662f60..6ca01f2 100644
--- a/lib/zip_file_set_external_attributes.c
+++ b/lib/zip_file_set_external_attributes.c
@@ -1,6 +1,6 @@
 /*
   zip_file_set_external_attributes.c -- set external attributes for entry
-  Copyright (C) 2013-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2013-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_file_strerror.c b/lib/zip_file_strerror.c
index 2dcdba7..e21c1dc 100644
--- a/lib/zip_file_strerror.c
+++ b/lib/zip_file_strerror.c
@@ -1,6 +1,6 @@
 /*
   zip_file_sterror.c -- get string representation of zip file error
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_fopen.c b/lib/zip_fopen.c
index 2da0cc5..513f78b 100644
--- a/lib/zip_fopen.c
+++ b/lib/zip_fopen.c
@@ -1,6 +1,6 @@
 /*
   zip_fopen.c -- open file in zip archive for reading
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_fopen_encrypted.c b/lib/zip_fopen_encrypted.c
index 8016015..5a48437 100644
--- a/lib/zip_fopen_encrypted.c
+++ b/lib/zip_fopen_encrypted.c
@@ -1,6 +1,6 @@
 /*
   zip_fopen_encrypted.c -- open file for reading with password
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_fopen_index.c b/lib/zip_fopen_index.c
index 5fd5f1a..1f7ce8c 100644
--- a/lib/zip_fopen_index.c
+++ b/lib/zip_fopen_index.c
@@ -1,6 +1,6 @@
 /*
   zip_fopen_index.c -- open file in zip archive for reading by index
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_fopen_index_encrypted.c b/lib/zip_fopen_index_encrypted.c
index 8c8a80d..dfdeffa 100644
--- a/lib/zip_fopen_index_encrypted.c
+++ b/lib/zip_fopen_index_encrypted.c
@@ -1,6 +1,6 @@
 /*
   zip_fopen_index_encrypted.c -- open file for reading by index w/ password
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_fread.c b/lib/zip_fread.c
index ecf0c3b..edad9d2 100644
--- a/lib/zip_fread.c
+++ b/lib/zip_fread.c
@@ -1,6 +1,6 @@
 /*
   zip_fread.c -- read from file
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_fseek.c b/lib/zip_fseek.c
index 21f344a..542ca07 100644
--- a/lib/zip_fseek.c
+++ b/lib/zip_fseek.c
@@ -1,6 +1,6 @@
 /*
   zip_fseek.c -- seek in file
-  Copyright (C) 2016-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2016-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_ftell.c b/lib/zip_ftell.c
index 2b36770..42067a1 100644
--- a/lib/zip_ftell.c
+++ b/lib/zip_ftell.c
@@ -1,6 +1,6 @@
 /*
   zip_ftell.c -- tell position in file
-  Copyright (C) 2016-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2016-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_get_archive_comment.c b/lib/zip_get_archive_comment.c
index 18a4b61..6752380 100644
--- a/lib/zip_get_archive_comment.c
+++ b/lib/zip_get_archive_comment.c
@@ -1,6 +1,6 @@
 /*
   zip_get_archive_comment.c -- get archive comment
-  Copyright (C) 2006-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2006-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_get_archive_flag.c b/lib/zip_get_archive_flag.c
index 3185ac5..e4d412c 100644
--- a/lib/zip_get_archive_flag.c
+++ b/lib/zip_get_archive_flag.c
@@ -1,6 +1,6 @@
 /*
   zip_get_archive_flag.c -- get archive global flag
-  Copyright (C) 2008-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2008-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_get_encryption_implementation.c b/lib/zip_get_encryption_implementation.c
index c1643da..191e805 100644
--- a/lib/zip_get_encryption_implementation.c
+++ b/lib/zip_get_encryption_implementation.c
@@ -1,6 +1,6 @@
 /*
   zip_get_encryption_implementation.c -- get encryption implementation
-  Copyright (C) 2009-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2009-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_get_file_comment.c b/lib/zip_get_file_comment.c
index 28429bc..dd11816 100644
--- a/lib/zip_get_file_comment.c
+++ b/lib/zip_get_file_comment.c
@@ -1,6 +1,6 @@
 /*
   zip_get_file_comment.c -- get file comment
-  Copyright (C) 2006-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2006-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_get_name.c b/lib/zip_get_name.c
index 1a4bab8..8777868 100644
--- a/lib/zip_get_name.c
+++ b/lib/zip_get_name.c
@@ -1,6 +1,6 @@
 /*
   zip_get_name.c -- get filename for a file in zip file
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_get_num_entries.c b/lib/zip_get_num_entries.c
index 3b18c74..16d901c 100644
--- a/lib/zip_get_num_entries.c
+++ b/lib/zip_get_num_entries.c
@@ -1,6 +1,6 @@
 /*
   zip_get_num_entries.c -- get number of entries in archive
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_get_num_files.c b/lib/zip_get_num_files.c
index 23d7c9c..1c6d6bb 100644
--- a/lib/zip_get_num_files.c
+++ b/lib/zip_get_num_files.c
@@ -1,6 +1,6 @@
 /*
   zip_get_num_files.c -- get number of files in archive
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_hash.c b/lib/zip_hash.c
index 56e8d78..e01d935 100644
--- a/lib/zip_hash.c
+++ b/lib/zip_hash.c
@@ -1,6 +1,6 @@
 /*
   zip_hash.c -- hash table string -> uint64
-  Copyright (C) 2015-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2015-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_io_util.c b/lib/zip_io_util.c
index 3678dd5..3ee3670 100644
--- a/lib/zip_io_util.c
+++ b/lib/zip_io_util.c
@@ -1,6 +1,6 @@
 /*
  zip_io_util.c -- I/O helper functions
- Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+ Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
  This file is part of libzip, a library to manipulate ZIP archives.
  The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_libzip_version.c b/lib/zip_libzip_version.c
index df1e55b..6e20724 100644
--- a/lib/zip_libzip_version.c
+++ b/lib/zip_libzip_version.c
@@ -1,6 +1,6 @@
 /*
   zip_libzip_version.c -- return run-time version of library
-  Copyright (C) 2017-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2017-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_memdup.c b/lib/zip_memdup.c
index 1691860..8f6175b 100644
--- a/lib/zip_memdup.c
+++ b/lib/zip_memdup.c
@@ -1,6 +1,6 @@
 /*
   zip_memdup.c -- internal zip function, "strdup" with len
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_mkstempm.c b/lib/zip_mkstempm.c
index 41516d2..ccdd62a 100644
--- a/lib/zip_mkstempm.c
+++ b/lib/zip_mkstempm.c
@@ -1,6 +1,6 @@
 /*
   zip_mkstempm.c -- mkstemp replacement that accepts a mode argument
-  Copyright (C) 2019-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2019-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_name_locate.c b/lib/zip_name_locate.c
index 308d843..8a88404 100644
--- a/lib/zip_name_locate.c
+++ b/lib/zip_name_locate.c
@@ -1,6 +1,6 @@
 /*
   zip_name_locate.c -- get index by name
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_new.c b/lib/zip_new.c
index d2a5fa1..3768d5b 100644
--- a/lib/zip_new.c
+++ b/lib/zip_new.c
@@ -1,6 +1,6 @@
 /*
   zip_new.c -- create and init struct zip
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_open.c b/lib/zip_open.c
index 58bcec3..1d2f69a 100644
--- a/lib/zip_open.c
+++ b/lib/zip_open.c
@@ -1,6 +1,6 @@
 /*
   zip_open.c -- open zip archive by name
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_random_unix.c b/lib/zip_random_unix.c
index 4aa9cc2..da44d3c 100644
--- a/lib/zip_random_unix.c
+++ b/lib/zip_random_unix.c
@@ -1,6 +1,6 @@
 /*
   zip_random_unix.c -- fill the user's buffer with random stuff (Unix version)
-  Copyright (C) 2016-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2016-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_random_uwp.c b/lib/zip_random_uwp.c
index 77cc9c1..04b03b4 100644
--- a/lib/zip_random_uwp.c
+++ b/lib/zip_random_uwp.c
@@ -1,6 +1,6 @@
 /*
   zip_random_uwp.c -- fill the user's buffer with random stuff (UWP version)
-  Copyright (C) 2017-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2017-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_random_win32.c b/lib/zip_random_win32.c
index 2517357..436306b 100644
--- a/lib/zip_random_win32.c
+++ b/lib/zip_random_win32.c
@@ -1,6 +1,6 @@
 /*
   zip_random_win32.c -- fill the user's buffer with random stuff (Windows version)
-  Copyright (C) 2016-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2016-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_rename.c b/lib/zip_rename.c
index eb1b395..3e67b7c 100644
--- a/lib/zip_rename.c
+++ b/lib/zip_rename.c
@@ -1,6 +1,6 @@
 /*
   zip_rename.c -- rename file in zip archive
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_replace.c b/lib/zip_replace.c
index 2140223..e9a2973 100644
--- a/lib/zip_replace.c
+++ b/lib/zip_replace.c
@@ -1,6 +1,6 @@
 /*
   zip_replace.c -- replace file via callback function
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_set_archive_comment.c b/lib/zip_set_archive_comment.c
index ce0c5d3..ee6f2ba 100644
--- a/lib/zip_set_archive_comment.c
+++ b/lib/zip_set_archive_comment.c
@@ -1,6 +1,6 @@
 /*
   zip_set_archive_comment.c -- set archive comment
-  Copyright (C) 2006-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2006-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_set_archive_flag.c b/lib/zip_set_archive_flag.c
index fe9f62f..a5afc81 100644
--- a/lib/zip_set_archive_flag.c
+++ b/lib/zip_set_archive_flag.c
@@ -1,6 +1,6 @@
 /*
   zip_get_archive_flag.c -- set archive global flag
-  Copyright (C) 2008-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2008-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_set_default_password.c b/lib/zip_set_default_password.c
index d893949..625ac3f 100644
--- a/lib/zip_set_default_password.c
+++ b/lib/zip_set_default_password.c
@@ -1,6 +1,6 @@
 /*
   zip_set_default_password.c -- set default password for decryption
-  Copyright (C) 2009-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2009-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_set_file_comment.c b/lib/zip_set_file_comment.c
index d19121f..2e7dcb7 100644
--- a/lib/zip_set_file_comment.c
+++ b/lib/zip_set_file_comment.c
@@ -1,6 +1,6 @@
 /*
   zip_set_file_comment.c -- set comment for file in archive
-  Copyright (C) 2006-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2006-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_set_file_compression.c b/lib/zip_set_file_compression.c
index 166c0c7..d2027c9 100644
--- a/lib/zip_set_file_compression.c
+++ b/lib/zip_set_file_compression.c
@@ -1,6 +1,6 @@
 /*
   zip_set_file_compression.c -- set compression for file in archive
-  Copyright (C) 2012-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2012-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_set_name.c b/lib/zip_set_name.c
index 5267685..af4ec93 100644
--- a/lib/zip_set_name.c
+++ b/lib/zip_set_name.c
@@ -1,6 +1,6 @@
 /*
   zip_set_name.c -- rename helper function
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_accept_empty.c b/lib/zip_source_accept_empty.c
index 754b80b..10f4012 100644
--- a/lib/zip_source_accept_empty.c
+++ b/lib/zip_source_accept_empty.c
@@ -1,6 +1,6 @@
 /*
   zip_source_accept_empty.c -- if empty source is a valid archive
-  Copyright (C) 2019-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2019-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_begin_write.c b/lib/zip_source_begin_write.c
index 3981dc1..cefb809 100644
--- a/lib/zip_source_begin_write.c
+++ b/lib/zip_source_begin_write.c
@@ -1,6 +1,6 @@
 /*
   zip_source_begin_write.c -- start a new file for writing
-  Copyright (C) 2014-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2014-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_begin_write_cloning.c b/lib/zip_source_begin_write_cloning.c
index bfc63c8..71911e7 100644
--- a/lib/zip_source_begin_write_cloning.c
+++ b/lib/zip_source_begin_write_cloning.c
@@ -1,6 +1,6 @@
 /*
   zip_source_begin_write_cloning.c -- clone part of file for writing
-  Copyright (C) 2017-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2017-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_buffer.c b/lib/zip_source_buffer.c
index a54c4fc..e0ab72b 100644
--- a/lib/zip_source_buffer.c
+++ b/lib/zip_source_buffer.c
@@ -1,6 +1,6 @@
 /*
   zip_source_buffer.c -- create zip data source from buffer
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_call.c b/lib/zip_source_call.c
index 66b13d6..41b5c0f 100644
--- a/lib/zip_source_call.c
+++ b/lib/zip_source_call.c
@@ -1,6 +1,6 @@
 /*
  zip_source_call.c -- invoke callback command on zip_source
- Copyright (C) 2009-2020 Dieter Baron and Thomas Klausner
+ Copyright (C) 2009-2021 Dieter Baron and Thomas Klausner
 
  This file is part of libzip, a library to manipulate ZIP archives.
  The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_close.c b/lib/zip_source_close.c
index 264e4b0..48efe8a 100644
--- a/lib/zip_source_close.c
+++ b/lib/zip_source_close.c
@@ -1,6 +1,6 @@
 /*
   zip_source_close.c -- close zip_source (stop reading)
-  Copyright (C) 2009-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2009-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_commit_write.c b/lib/zip_source_commit_write.c
index ec8cd8b..30243d5 100644
--- a/lib/zip_source_commit_write.c
+++ b/lib/zip_source_commit_write.c
@@ -1,6 +1,6 @@
 /*
   zip_source_commit_write.c -- commit changes to file
-  Copyright (C) 2014-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2014-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_compress.c b/lib/zip_source_compress.c
index 35a022c..9776065 100644
--- a/lib/zip_source_compress.c
+++ b/lib/zip_source_compress.c
@@ -1,6 +1,6 @@
 /*
   zip_source_compress.c -- (de)compression routines
-  Copyright (C) 2017-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2017-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_crc.c b/lib/zip_source_crc.c
index 7d01f04..ebbeaa7 100644
--- a/lib/zip_source_crc.c
+++ b/lib/zip_source_crc.c
@@ -1,6 +1,6 @@
 /*
   zip_source_crc.c -- pass-through source that calculates CRC32 and size
-  Copyright (C) 2009-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2009-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_error.c b/lib/zip_source_error.c
index 00998e8..042901f 100644
--- a/lib/zip_source_error.c
+++ b/lib/zip_source_error.c
@@ -1,6 +1,6 @@
 /*
   zip_source_error.c -- get last error from zip_source
-  Copyright (C) 2009-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2009-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_file_common.c b/lib/zip_source_file_common.c
index 3241436..0012395 100644
--- a/lib/zip_source_file_common.c
+++ b/lib/zip_source_file_common.c
@@ -1,6 +1,6 @@
 /*
   zip_source_file_common.c -- create data source from file
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_free.c b/lib/zip_source_free.c
index 2650493..2e6944e 100644
--- a/lib/zip_source_free.c
+++ b/lib/zip_source_free.c
@@ -1,6 +1,6 @@
 /*
   zip_source_free.c -- free zip data source
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_function.c b/lib/zip_source_function.c
index 5602f1d..44db947 100644
--- a/lib/zip_source_function.c
+++ b/lib/zip_source_function.c
@@ -1,6 +1,6 @@
 /*
   zip_source_function.c -- create zip data source from callback function
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_is_deleted.c b/lib/zip_source_is_deleted.c
index 27c931f..c2c7eb5 100644
--- a/lib/zip_source_is_deleted.c
+++ b/lib/zip_source_is_deleted.c
@@ -1,6 +1,6 @@
 /*
   zip_source_is_deleted.c -- was archive was removed?
-  Copyright (C) 2014-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2014-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_layered.c b/lib/zip_source_layered.c
index a029869..f6db2a7 100644
--- a/lib/zip_source_layered.c
+++ b/lib/zip_source_layered.c
@@ -1,6 +1,6 @@
 /*
   zip_source_layered.c -- create layered source
-  Copyright (C) 2009-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2009-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_open.c b/lib/zip_source_open.c
index 442f189..b12a4c2 100644
--- a/lib/zip_source_open.c
+++ b/lib/zip_source_open.c
@@ -1,6 +1,6 @@
 /*
   zip_source_open.c -- open zip_source (prepare for reading)
-  Copyright (C) 2009-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2009-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_read.c b/lib/zip_source_read.c
index f146ab0..ee7686a 100644
--- a/lib/zip_source_read.c
+++ b/lib/zip_source_read.c
@@ -1,6 +1,6 @@
 /*
   zip_source_read.c -- read data from zip_source
-  Copyright (C) 2009-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2009-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_remove.c b/lib/zip_source_remove.c
index a6ccd7e..46230cd 100644
--- a/lib/zip_source_remove.c
+++ b/lib/zip_source_remove.c
@@ -1,6 +1,6 @@
 /*
  zip_source_remove.c -- remove empty archive
- Copyright (C) 2014-2020 Dieter Baron and Thomas Klausner
+ Copyright (C) 2014-2021 Dieter Baron and Thomas Klausner
 
  This file is part of libzip, a library to manipulate ZIP archives.
  The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_rollback_write.c b/lib/zip_source_rollback_write.c
index d21b1ff..6f98c39 100644
--- a/lib/zip_source_rollback_write.c
+++ b/lib/zip_source_rollback_write.c
@@ -1,6 +1,6 @@
 /*
   zip_source_rollback_write.c -- discard changes
-  Copyright (C) 2014-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2014-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_seek.c b/lib/zip_source_seek.c
index 29d1e96..1acd6d8 100644
--- a/lib/zip_source_seek.c
+++ b/lib/zip_source_seek.c
@@ -1,6 +1,6 @@
 /*
   zip_source_seek.c -- seek to offset
-  Copyright (C) 2014-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2014-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_seek_write.c b/lib/zip_source_seek_write.c
index 5fa2a81..5599bcb 100644
--- a/lib/zip_source_seek_write.c
+++ b/lib/zip_source_seek_write.c
@@ -1,6 +1,6 @@
 /*
   zip_source_seek_write.c -- seek to offset for writing
-  Copyright (C) 2014-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2014-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_stat.c b/lib/zip_source_stat.c
index 46eb92d..a9745e0 100644
--- a/lib/zip_source_stat.c
+++ b/lib/zip_source_stat.c
@@ -1,6 +1,6 @@
 /*
   zip_source_stat.c -- get meta information from zip_source
-  Copyright (C) 2009-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2009-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_supports.c b/lib/zip_source_supports.c
index b4575a7..66a5303 100644
--- a/lib/zip_source_supports.c
+++ b/lib/zip_source_supports.c
@@ -1,6 +1,6 @@
 /*
   zip_source_supports.c -- check for supported functions
-  Copyright (C) 2014-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2014-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_tell.c b/lib/zip_source_tell.c
index b17412b..8518739 100644
--- a/lib/zip_source_tell.c
+++ b/lib/zip_source_tell.c
@@ -1,6 +1,6 @@
 /*
   zip_source_tell.c -- report current offset
-  Copyright (C) 2014-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2014-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_tell_write.c b/lib/zip_source_tell_write.c
index c09a79f..8edee67 100644
--- a/lib/zip_source_tell_write.c
+++ b/lib/zip_source_tell_write.c
@@ -1,6 +1,6 @@
 /*
   zip_source_tell_write.c -- report current offset for writing
-  Copyright (C) 2014-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2014-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_window.c b/lib/zip_source_window.c
index 6129785..6f457b6 100644
--- a/lib/zip_source_window.c
+++ b/lib/zip_source_window.c
@@ -1,6 +1,6 @@
 /*
   zip_source_window.c -- return part of lower source
-  Copyright (C) 2012-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2012-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_winzip_aes_decode.c b/lib/zip_source_winzip_aes_decode.c
index b2bb3cb..2999654 100644
--- a/lib/zip_source_winzip_aes_decode.c
+++ b/lib/zip_source_winzip_aes_decode.c
@@ -1,6 +1,6 @@
 /*
   zip_source_winzip_aes_decode.c -- Winzip AES decryption routines
-  Copyright (C) 2009-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2009-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_winzip_aes_encode.c b/lib/zip_source_winzip_aes_encode.c
index 19d5cf0..44c4e4b 100644
--- a/lib/zip_source_winzip_aes_encode.c
+++ b/lib/zip_source_winzip_aes_encode.c
@@ -1,6 +1,6 @@
 /*
   zip_source_winzip_aes_encode.c -- Winzip AES encryption routines
-  Copyright (C) 2009-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2009-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_write.c b/lib/zip_source_write.c
index 33bf9c9..bb72b14 100644
--- a/lib/zip_source_write.c
+++ b/lib/zip_source_write.c
@@ -1,6 +1,6 @@
 /*
   zip_source_write.c -- start a new file for writing
-  Copyright (C) 2014-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2014-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_zip.c b/lib/zip_source_zip.c
index 985dac8..e6cedaf 100644
--- a/lib/zip_source_zip.c
+++ b/lib/zip_source_zip.c
@@ -1,6 +1,6 @@
 /*
   zip_source_zip.c -- create data source from zip file
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_source_zip_new.c b/lib/zip_source_zip_new.c
index a1cbc7e..cf3d267 100644
--- a/lib/zip_source_zip_new.c
+++ b/lib/zip_source_zip_new.c
@@ -1,6 +1,6 @@
 /*
   zip_source_zip_new.c -- prepare data structures for zip_fopen/zip_source_zip
-  Copyright (C) 2012-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2012-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_stat.c b/lib/zip_stat.c
index c328dcf..4b7c495 100644
--- a/lib/zip_stat.c
+++ b/lib/zip_stat.c
@@ -1,6 +1,6 @@
 /*
   zip_stat.c -- get information about file by name
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_stat_init.c b/lib/zip_stat_init.c
index 0cf51ef..f513bde 100644
--- a/lib/zip_stat_init.c
+++ b/lib/zip_stat_init.c
@@ -1,6 +1,6 @@
 /*
   zip_stat_init.c -- initialize struct zip_stat.
-  Copyright (C) 2006-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2006-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_strerror.c b/lib/zip_strerror.c
index 6adec16..e22db65 100644
--- a/lib/zip_strerror.c
+++ b/lib/zip_strerror.c
@@ -1,6 +1,6 @@
 /*
   zip_sterror.c -- get string representation of zip error
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_string.c b/lib/zip_string.c
index 2c6f428..7013315 100644
--- a/lib/zip_string.c
+++ b/lib/zip_string.c
@@ -1,6 +1,6 @@
 /*
   zip_string.c -- string handling (with encoding)
-  Copyright (C) 2012-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2012-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_unchange.c b/lib/zip_unchange.c
index 17e2500..d80a6ad 100644
--- a/lib/zip_unchange.c
+++ b/lib/zip_unchange.c
@@ -1,6 +1,6 @@
 /*
   zip_unchange.c -- undo changes to file in zip archive
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_unchange_all.c b/lib/zip_unchange_all.c
index b8bfd70..7b0a4c0 100644
--- a/lib/zip_unchange_all.c
+++ b/lib/zip_unchange_all.c
@@ -1,6 +1,6 @@
 /*
   zip_unchange.c -- undo changes to all files in zip archive
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_unchange_archive.c b/lib/zip_unchange_archive.c
index ebf2bd5..a0616cc 100644
--- a/lib/zip_unchange_archive.c
+++ b/lib/zip_unchange_archive.c
@@ -1,6 +1,6 @@
 /*
   zip_unchange_archive.c -- undo global changes to ZIP archive
-  Copyright (C) 2006-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2006-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_unchange_data.c b/lib/zip_unchange_data.c
index 2a393ad..153c839 100644
--- a/lib/zip_unchange_data.c
+++ b/lib/zip_unchange_data.c
@@ -1,6 +1,6 @@
 /*
   zip_unchange_data.c -- undo helper function
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_utf-8.c b/lib/zip_utf-8.c
index 51a4722..ebf67fa 100644
--- a/lib/zip_utf-8.c
+++ b/lib/zip_utf-8.c
@@ -1,6 +1,6 @@
 /*
   zip_utf-8.c -- UTF-8 support functions for libzip
-  Copyright (C) 2011-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2011-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zip_winzip_aes.c b/lib/zip_winzip_aes.c
index 75b279a..b36e46c 100644
--- a/lib/zip_winzip_aes.c
+++ b/lib/zip_winzip_aes.c
@@ -1,6 +1,6 @@
 /*
   zip_winzip_aes.c -- Winzip AES de/encryption backend routines
-  Copyright (C) 2017-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2017-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/lib/zipint.h b/lib/zipint.h
index 3079aac..eab1e3a 100644
--- a/lib/zipint.h
+++ b/lib/zipint.h
@@ -3,7 +3,7 @@
 
 /*
   zipint.h -- internal declarations.
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/man/libzip.mdoc b/man/libzip.mdoc
index fd06039..8799d30 100644
--- a/man/libzip.mdoc
+++ b/man/libzip.mdoc
@@ -1,5 +1,5 @@
 .\" libzip.mdoc -- general overview of available functions
-.\" Copyright (C) 2005-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2005-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_close.mdoc b/man/zip_close.mdoc
index 0b702a7..c6239c0 100644
--- a/man/zip_close.mdoc
+++ b/man/zip_close.mdoc
@@ -1,5 +1,5 @@
 .\" zip_close.mdoc -- close zip archive
-.\" Copyright (C) 2003-2019 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2003-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_error_clear.mdoc b/man/zip_error_clear.mdoc
index 39dceaf..c322630 100644
--- a/man/zip_error_clear.mdoc
+++ b/man/zip_error_clear.mdoc
@@ -1,5 +1,5 @@
 .\" zip_error_clear.mdoc -- clear error state for archive or file
-.\" Copyright (C) 2006-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2006-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_error_set.mdoc b/man/zip_error_set.mdoc
index f48a205..68e81f3 100644
--- a/man/zip_error_set.mdoc
+++ b/man/zip_error_set.mdoc
@@ -1,5 +1,5 @@
 .\" zip_error_set.mdoc -- set zip_error
-.\" Copyright (C) 2014-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2014-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_errors.mdoc b/man/zip_errors.mdoc
index dfc5979..5c1d8fd 100644
--- a/man/zip_errors.mdoc
+++ b/man/zip_errors.mdoc
@@ -1,5 +1,5 @@
 .\" zip_errors.mdoc -- list of all libzip error codes
-.\" Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_fdopen.mdoc b/man/zip_fdopen.mdoc
index 80ccca0..0db086e 100644
--- a/man/zip_fdopen.mdoc
+++ b/man/zip_fdopen.mdoc
@@ -1,5 +1,5 @@
 .\" zip_fdopen.mdoc -- open zip archive using existing file descriptor
-.\" Copyright (C) 2009-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2009-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_file_add.mdoc b/man/zip_file_add.mdoc
index 1492dea..4c29e27 100644
--- a/man/zip_file_add.mdoc
+++ b/man/zip_file_add.mdoc
@@ -1,5 +1,5 @@
 .\" zip_file_add.mdoc -- add files to zip archive
-.\" Copyright (C) 2004-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2004-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_file_get_comment.mdoc b/man/zip_file_get_comment.mdoc
index 4722b9e..a554f13 100644
--- a/man/zip_file_get_comment.mdoc
+++ b/man/zip_file_get_comment.mdoc
@@ -1,5 +1,5 @@
 .\" zip_file_get_comment.mdoc -- get comment for file in zip
-.\" Copyright (C) 2006-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2006-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP files.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_file_rename.mdoc b/man/zip_file_rename.mdoc
index 52c9eb2..a14fe66 100644
--- a/man/zip_file_rename.mdoc
+++ b/man/zip_file_rename.mdoc
@@ -1,5 +1,5 @@
 .\" zip_file_rename.mdoc -- rename file in zip archive
-.\" Copyright (C) 2003-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2003-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_file_set_comment.mdoc b/man/zip_file_set_comment.mdoc
index fab0bc7..4328aac 100644
--- a/man/zip_file_set_comment.mdoc
+++ b/man/zip_file_set_comment.mdoc
@@ -1,5 +1,5 @@
 .\" zip_file_set_comment.mdoc -- set comment for file in zip
-.\" Copyright (C) 2006-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2006-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP files.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_file_set_encryption.mdoc b/man/zip_file_set_encryption.mdoc
index 7f37559..2bfd971 100644
--- a/man/zip_file_set_encryption.mdoc
+++ b/man/zip_file_set_encryption.mdoc
@@ -1,5 +1,5 @@
 .\" zip_file_set_encryption.mdoc -- set encryption method for file
-.\" Copyright (C) 2016-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2016-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP files.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_file_strerror.mdoc b/man/zip_file_strerror.mdoc
index de727d7..f10073b 100644
--- a/man/zip_file_strerror.mdoc
+++ b/man/zip_file_strerror.mdoc
@@ -1,5 +1,5 @@
 .\" zip_file_strerror.mdoc -- get string representation for a zip error
-.\" Copyright (C) 2003-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2003-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_fopen_encrypted.mdoc b/man/zip_fopen_encrypted.mdoc
index bdb94e0..80fd4b7 100644
--- a/man/zip_fopen_encrypted.mdoc
+++ b/man/zip_fopen_encrypted.mdoc
@@ -1,5 +1,5 @@
 .\" zip_fopen_encrypted.mdoc -- open encrypted file in zip archive for reading
-.\" Copyright (C) 2011-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2011-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_ftell.mdoc b/man/zip_ftell.mdoc
index 01c5245..dff0eff 100644
--- a/man/zip_ftell.mdoc
+++ b/man/zip_ftell.mdoc
@@ -1,5 +1,5 @@
 .\" zip_ftell.mdoc -- tell position in file
-.\" Copyright (C) 2016-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2016-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_get_archive_comment.mdoc b/man/zip_get_archive_comment.mdoc
index 7c3be29..1e2eb7e 100644
--- a/man/zip_get_archive_comment.mdoc
+++ b/man/zip_get_archive_comment.mdoc
@@ -1,5 +1,5 @@
 .\" zip_get_archive_comment.mdoc -- get zip archive comment
-.\" Copyright (C) 2006-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2006-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_get_name.mdoc b/man/zip_get_name.mdoc
index ac60655..bb1ea0a 100644
--- a/man/zip_get_name.mdoc
+++ b/man/zip_get_name.mdoc
@@ -1,5 +1,5 @@
 .\" zip_get_name.mdoc -- get name of file by index
-.\" Copyright (C) 2003-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2003-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_name_locate.mdoc b/man/zip_name_locate.mdoc
index 74fc94e..6ffe5c3 100644
--- a/man/zip_name_locate.mdoc
+++ b/man/zip_name_locate.mdoc
@@ -1,5 +1,5 @@
 .\" zip_name_locate.mdoc -- get index of file by name
-.\" Copyright (C) 2003-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2003-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_open.mdoc b/man/zip_open.mdoc
index 14e5875..946eea3 100644
--- a/man/zip_open.mdoc
+++ b/man/zip_open.mdoc
@@ -1,5 +1,5 @@
 .\" zip_open.mdoc -- open zip archive
-.\" Copyright (C) 2003-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2003-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_register_progress_callback_with_state.mdoc b/man/zip_register_progress_callback_with_state.mdoc
index 5726358..5d881b6 100644
--- a/man/zip_register_progress_callback_with_state.mdoc
+++ b/man/zip_register_progress_callback_with_state.mdoc
@@ -1,5 +1,5 @@
 .\" zip_register_progress_callback_with_state.mdoc -- provide updates during zip_close
-.\" Copyright (C) 2017 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2017-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_set_archive_comment.mdoc b/man/zip_set_archive_comment.mdoc
index 467a811..4fe8a25 100644
--- a/man/zip_set_archive_comment.mdoc
+++ b/man/zip_set_archive_comment.mdoc
@@ -1,5 +1,5 @@
 .\" zip_set_archive_comment.mdoc -- set zip archive comment
-.\" Copyright (C) 2006-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2006-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_set_default_password.mdoc b/man/zip_set_default_password.mdoc
index 6381195..a1f1335 100644
--- a/man/zip_set_default_password.mdoc
+++ b/man/zip_set_default_password.mdoc
@@ -1,5 +1,5 @@
 .\" zip_set_default_password.mdoc -- set default password for zip
-.\" Copyright (C) 2011-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2011-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP files.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_set_file_compression.mdoc b/man/zip_set_file_compression.mdoc
index da27308..53a3614 100644
--- a/man/zip_set_file_compression.mdoc
+++ b/man/zip_set_file_compression.mdoc
@@ -1,5 +1,5 @@
 .\" zip_set_file_compression.mdoc -- set compression method and its flags
-.\" Copyright (C) 2012-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2012-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP files.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_source.mdoc b/man/zip_source.mdoc
index a49243f..0b3cafa 100644
--- a/man/zip_source.mdoc
+++ b/man/zip_source.mdoc
@@ -1,5 +1,5 @@
 .\" zip_source.mdoc -- description of zip data source
-.\" Copyright (C) 2014-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2014-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_source_buffer.mdoc b/man/zip_source_buffer.mdoc
index 441bdc3..081e7e2 100644
--- a/man/zip_source_buffer.mdoc
+++ b/man/zip_source_buffer.mdoc
@@ -1,5 +1,5 @@
 .\" zip_source_buffer.mdoc -- create zip data source from buffer
-.\" Copyright (C) 2004-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2004-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_source_buffer_fragment.mdoc b/man/zip_source_buffer_fragment.mdoc
index 2829c4e..8965528 100644
--- a/man/zip_source_buffer_fragment.mdoc
+++ b/man/zip_source_buffer_fragment.mdoc
@@ -1,5 +1,5 @@
 .\" zip_source_buffer_fragment.mdoc -- create zip data source from multiple buffers
-.\" Copyright (C) 2004-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2004-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_source_close.mdoc b/man/zip_source_close.mdoc
index 57f2629..197695d 100644
--- a/man/zip_source_close.mdoc
+++ b/man/zip_source_close.mdoc
@@ -1,5 +1,5 @@
 .\" zip_source_close.mdoc -- close zip source (open for reading)
-.\" Copyright (C) 2014-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2014-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_source_file.mdoc b/man/zip_source_file.mdoc
index a4ae655..cffd493 100644
--- a/man/zip_source_file.mdoc
+++ b/man/zip_source_file.mdoc
@@ -1,5 +1,5 @@
 .\" zip_source_file.mdoc -- create data source from a file
-.\" Copyright (C) 2004-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2004-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_source_filep.mdoc b/man/zip_source_filep.mdoc
index 17d1319..088c750 100644
--- a/man/zip_source_filep.mdoc
+++ b/man/zip_source_filep.mdoc
@@ -1,5 +1,5 @@
 .\" zip_source_filep.mdoc -- create data source from a file stream
-.\" Copyright (C) 2004-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2004-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_source_function.mdoc b/man/zip_source_function.mdoc
index fdfd899..8272ea1 100644
--- a/man/zip_source_function.mdoc
+++ b/man/zip_source_function.mdoc
@@ -1,5 +1,5 @@
 .\" zip_source_function.mdoc -- create data source from function
-.\" Copyright (C) 2004-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2004-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_source_stat.mdoc b/man/zip_source_stat.mdoc
index 64d13c8..b5916a8 100644
--- a/man/zip_source_stat.mdoc
+++ b/man/zip_source_stat.mdoc
@@ -1,5 +1,5 @@
 .\" zip_source_stat.mdoc -- get information about zip source
-.\" Copyright (C) 2014-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2014-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_source_win32a.mdoc b/man/zip_source_win32a.mdoc
index 6049df4..557ae7d 100644
--- a/man/zip_source_win32a.mdoc
+++ b/man/zip_source_win32a.mdoc
@@ -1,5 +1,5 @@
 .\" zip_source_win32a.mdoc -- create data source using a win32 ANSI name
-.\" Copyright (C) 2015-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2015-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_source_win32handle.mdoc b/man/zip_source_win32handle.mdoc
index af037cd..ab01543 100644
--- a/man/zip_source_win32handle.mdoc
+++ b/man/zip_source_win32handle.mdoc
@@ -1,5 +1,5 @@
 .\" zip_source_handle.mdoc -- create data source from a Windows file handle
-.\" Copyright (C) 2015-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2015-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_source_win32w.mdoc b/man/zip_source_win32w.mdoc
index 3381e41..904760b 100644
--- a/man/zip_source_win32w.mdoc
+++ b/man/zip_source_win32w.mdoc
@@ -1,5 +1,5 @@
 .\" zip_source_win32w.mdoc -- create data source using a win32 Unicode name
-.\" Copyright (C) 2015-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2015-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zip_source_zip.mdoc b/man/zip_source_zip.mdoc
index 0b79134..27f3345 100644
--- a/man/zip_source_zip.mdoc
+++ b/man/zip_source_zip.mdoc
@@ -1,5 +1,5 @@
 .\" zip_source_zip.mdoc -- create data source from zip file
-.\" Copyright (C) 2004-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2004-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zipcmp.mdoc b/man/zipcmp.mdoc
index aa553d4..d1b1513 100644
--- a/man/zipcmp.mdoc
+++ b/man/zipcmp.mdoc
@@ -1,5 +1,5 @@
 .\" zipcmp.mdoc -- compare zip archives
-.\" Copyright (C) 2003-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2003-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/man/zipmerge.mdoc b/man/zipmerge.mdoc
index 2b8a7c1..1325f8c 100644
--- a/man/zipmerge.mdoc
+++ b/man/zipmerge.mdoc
@@ -1,5 +1,5 @@
 .\" zipmerge.mdoc -- merge zip archives
-.\" Copyright (C) 2004-2020 Dieter Baron and Thomas Klausner
+.\" Copyright (C) 2004-2021 Dieter Baron and Thomas Klausner
 .\"
 .\" This file is part of libzip, a library to manipulate ZIP archives.
 .\" The authors can be contacted at <libzip@nih.at>
diff --git a/regress/add_from_filep.c b/regress/add_from_filep.c
index d72ddbd..53aec85 100644
--- a/regress/add_from_filep.c
+++ b/regress/add_from_filep.c
@@ -1,6 +1,6 @@
 /*
   add_from_filep.c -- test case for adding file to archive
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/regress/can_clone_file.c b/regress/can_clone_file.c
index 427a9dd..887947d 100644
--- a/regress/can_clone_file.c
+++ b/regress/can_clone_file.c
@@ -1,6 +1,6 @@
 /*
  can_clone_file.c -- does the current filesystem support cloning
- Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+ Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
  This file is part of libzip, a library to manipulate ZIP archives.
  The authors can be contacted at <libzip@nih.at>
diff --git a/regress/fopen_unchanged.c b/regress/fopen_unchanged.c
index 4b0b173..8e2ee26 100644
--- a/regress/fopen_unchanged.c
+++ b/regress/fopen_unchanged.c
@@ -1,6 +1,6 @@
 /*
   fopen_unchanged.c -- test case for adding file and reading from unchanged
-  Copyright (C) 2012-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2012-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/regress/fread.c b/regress/fread.c
index 98e31f0..f644282 100644
--- a/regress/fread.c
+++ b/regress/fread.c
@@ -1,6 +1,6 @@
 /*
   fread.c -- test cases for reading from zip archives
-  Copyright (C) 2004-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2004-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/regress/fseek.c b/regress/fseek.c
index b9d39ba..41b7c3f 100644
--- a/regress/fseek.c
+++ b/regress/fseek.c
@@ -1,6 +1,6 @@
 /*
   fseek.c -- test tool for seeking in zip archives
-  Copyright (C) 2016-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2016-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/regress/hole.c b/regress/hole.c
index 1911bb7..e15033c 100644
--- a/regress/hole.c
+++ b/regress/hole.c
@@ -1,6 +1,6 @@
 /*
  hole.c -- convert huge files with mostly NULs to/from source_hole
- Copyright (C) 2014-2020 Dieter Baron and Thomas Klausner
+ Copyright (C) 2014-2021 Dieter Baron and Thomas Klausner
 
  This file is part of libzip, a library to manipulate ZIP archives.
  The authors can be contacted at <libzip@nih.at>
diff --git a/regress/liboverride-test.c b/regress/liboverride-test.c
index 5190586..f00f3d7 100644
--- a/regress/liboverride-test.c
+++ b/regress/liboverride-test.c
@@ -1,7 +1,7 @@
 /*
   liboverride.c -- override function called by zip_open()
 
-  Copyright (C) 2017-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2017-2021 Dieter Baron and Thomas Klausner
 
   This file is part of ckmame, a program to check rom sets for MAME.
   The authors can be contacted at <ckmame@nih.at>
diff --git a/regress/liboverride.c b/regress/liboverride.c
index b2a6530..200f712 100644
--- a/regress/liboverride.c
+++ b/regress/liboverride.c
@@ -1,7 +1,7 @@
 /*
   liboverride.c -- override function called by zip_open()
 
-  Copyright (C) 2017-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2017-2021 Dieter Baron and Thomas Klausner
 
   This file is part of ckmame, a program to check rom sets for MAME.
   The authors can be contacted at <ckmame@nih.at>
diff --git a/regress/malloc.c b/regress/malloc.c
index 0a5f62b..1141104 100644
--- a/regress/malloc.c
+++ b/regress/malloc.c
@@ -1,6 +1,6 @@
 /*
   malloc.c -- override *alloc() to allow testing special cases
-  Copyright (C) 2015-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2015-2021 Dieter Baron and Thomas Klausner
 
   This file is part of ckmame, a program to check rom sets for MAME.
   The authors can be contacted at <ckmame@nih.at>
diff --git a/regress/nonrandomopen.c b/regress/nonrandomopen.c
index 5467f50..4523f03 100644
--- a/regress/nonrandomopen.c
+++ b/regress/nonrandomopen.c
@@ -1,7 +1,7 @@
 /*
   nonrandomopen.c -- override zip_secure_random
 
-  Copyright (C) 2017-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2017-2021 Dieter Baron and Thomas Klausner
 
   This file is part of ckmame, a program to check rom sets for MAME.
   The authors can be contacted at <ckmame@nih.at>
diff --git a/regress/nonrandomopentest.c b/regress/nonrandomopentest.c
index 4768221..e4585a4 100644
--- a/regress/nonrandomopentest.c
+++ b/regress/nonrandomopentest.c
@@ -1,6 +1,6 @@
 /*
   nonrandomopentest.c -- test nonrandomopen.so
-  Copyright (C) 2017-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2017-2021 Dieter Baron and Thomas Klausner
 
   This file is part of ckmame, a program to check rom sets for MAME.
   The authors can be contacted at <ckmame@nih.at>
diff --git a/regress/source_hole.c b/regress/source_hole.c
index 84e0791..0352114 100644
--- a/regress/source_hole.c
+++ b/regress/source_hole.c
@@ -1,6 +1,6 @@
 /*
  source_hole.c -- source for handling huge files that are mostly NULs
- Copyright (C) 2014-2020 Dieter Baron and Thomas Klausner
+ Copyright (C) 2014-2021 Dieter Baron and Thomas Klausner
 
  This file is part of libzip, a library to manipulate ZIP archives.
  The authors can be contacted at <libzip@nih.at>
diff --git a/regress/tryopen.c b/regress/tryopen.c
index 52ace93..54058f2 100644
--- a/regress/tryopen.c
+++ b/regress/tryopen.c
@@ -1,6 +1,6 @@
 /*
   tryopen.c -- tool for tests that try opening zip archives
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/src/getopt.h b/src/getopt.h
index adc7a90..bb09497 100644
--- a/src/getopt.h
+++ b/src/getopt.h
@@ -3,7 +3,7 @@
 
 /*
   getopt.h -- header for getopt() replacement function
-  Copyright (C) 1999-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 1999-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
diff --git a/src/zipcmp.c b/src/zipcmp.c
index 94670eb..6a1e741 100644
--- a/src/zipcmp.c
+++ b/src/zipcmp.c
@@ -1,6 +1,6 @@
 /*
   zipcmp.c -- compare zip files
-  Copyright (C) 2003-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2003-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
@@ -201,7 +201,7 @@
 Report bugs to <libzip@nih.at>.\n";
 
 char version_string[] = PROGRAM " (" PACKAGE " " VERSION ")\n\
-Copyright (C) 2003-2020 Dieter Baron and Thomas Klausner\n\
+Copyright (C) 2003-2021 Dieter Baron and Thomas Klausner\n\
 " PACKAGE " comes with ABSOLUTELY NO WARRANTY, to the extent permitted by law.\n";
 
 #define OPTIONS "hVCipqtv"
diff --git a/src/zipmerge.c b/src/zipmerge.c
index 3d1a82e..5361321 100644
--- a/src/zipmerge.c
+++ b/src/zipmerge.c
@@ -1,6 +1,6 @@
 /*
   zipmerge.c -- merge zip archives
-  Copyright (C) 2004-2020 Dieter Baron and Thomas Klausner
+  Copyright (C) 2004-2021 Dieter Baron and Thomas Klausner
 
   This file is part of libzip, a library to manipulate ZIP archives.
   The authors can be contacted at <libzip@nih.at>
@@ -66,7 +66,7 @@
 Report bugs to <libzip@nih.at>.\n";
 
 char version_string[] = PROGRAM " (" PACKAGE " " VERSION ")\n\
-Copyright (C) 2004-2020 Dieter Baron and Thomas Klausner\n\
+Copyright (C) 2004-2021 Dieter Baron and Thomas Klausner\n\
 " PACKAGE " comes with ABSOLUTELY NO WARRANTY, to the extent permitted by law.\n";
 
 #define OPTIONS "hVDiIsS"