diff --git a/Changelog b/Changelog
index 5b54d54..b5ca3e8 100644
--- a/Changelog
+++ b/Changelog
@@ -1,3 +1,7 @@
+2019-10-31:
+  Add support for xtensa architecture.
+  Add support for nios2 architecture.
+
 2019-10-12:
   Really add support for microblaze. A previous commit was lacking
 	the necessary line.
diff --git a/double-conversion/utils.h b/double-conversion/utils.h
index 221467f..98ec28b 100644
--- a/double-conversion/utils.h
+++ b/double-conversion/utils.h
@@ -94,6 +94,7 @@
     defined(__ARMEL__) || defined(__avr32__) || defined(_M_ARM) || defined(_M_ARM64) || \
     defined(__hppa__) || defined(__ia64__) || \
     defined(__mips__) || \
+    defined(__nios2__) || \
     defined(__powerpc__) || defined(__ppc__) || defined(__ppc64__) || \
     defined(_POWER) || defined(_ARCH_PPC) || defined(_ARCH_PPC64) || \
     defined(__sparc__) || defined(__sparc) || defined(__s390__) || \
@@ -102,7 +103,7 @@
     defined(__AARCH64EL__) || defined(__aarch64__) || defined(__AARCH64EB__) || \
     defined(__riscv) || defined(__e2k__) || \
     defined(__or1k__) || defined(__arc__) || \
-    defined(__microblaze__) || \
+    defined(__microblaze__) || defined(__XTENSA__) || \
     defined(__EMSCRIPTEN__)
 #define DOUBLE_CONVERSION_CORRECT_DOUBLE_OPERATIONS 1
 #elif defined(__mc68000__) || \