diff --git a/ChangeLog b/ChangeLog
index 13439f59f6..02664a5b90 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Mon Nov 25 14:25:08 2013  Zachary Scott  <e@zzak.io>
+
+	* ext/bigdecimal/bigdecimal.gemspec: Remove Gem::Specification#date
+	  We should rely on rubygems to create the date the gem was released
+	  for each version.
+
 Mon Nov 25 06:53:30 2013  Koichi Sasada  <ko1@atdot.net>
 
 	* internal.h: do not use ruby_sized_xrealloc() and ruby_sized_xfree()
diff --git a/ext/bigdecimal/bigdecimal.gemspec b/ext/bigdecimal/bigdecimal.gemspec
index 7131c21b3b..9f1a9cd7cd 100644
--- a/ext/bigdecimal/bigdecimal.gemspec
+++ b/ext/bigdecimal/bigdecimal.gemspec
@@ -4,7 +4,6 @@ _VERSION = "1.2.2"
 Gem::Specification.new do |s|
   s.name = "bigdecimal"
   s.version = _VERSION
-  s.date = "2012-02-19"
   s.summary = "Arbitrary-precision decimal floating-point number library."
   s.homepage = "http://www.ruby-lang.org"
   s.email = "mrkn@mrkn.jp"