diff --git a/ChangeLog b/ChangeLog
index ca6fe19057..754b615cac 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Tue Jan 16 00:17:00 2014  Kenta Murata  <mrkn@mrkn.jp>
+
+	* ext/bigdecimal/bigdecimal.gemspec: bigdecimal version 1.2.5.
+
 Wed Jan 15 20:30:31 2014  Masaki Matsushita  <glass.saga@gmail.com>
 
 	* io.c (io_binwrite): use writev(2) to avoid double write if available.
diff --git a/ext/bigdecimal/bigdecimal.gemspec b/ext/bigdecimal/bigdecimal.gemspec
index 7be9d7275b..e4f58c1adf 100644
--- a/ext/bigdecimal/bigdecimal.gemspec
+++ b/ext/bigdecimal/bigdecimal.gemspec
@@ -1,5 +1,5 @@
 # -*- ruby -*-
-_VERSION = "1.2.4"
+_VERSION = "1.2.5"
 date = %w$Date::                           $[1]
 
 Gem::Specification.new do |s|