Bump date.
diff --git a/LICENSE b/LICENSE
index f2de123..bf30801 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (C) 1999-2013 Dieter Baron and Thomas Klausner
+Copyright (C) 1999-2014 Dieter Baron and Thomas Klausner
 
 The authors can be contacted at <libzip@nih.at>