diff --git a/ChangeLog b/ChangeLog
index 3796169a22..b0b696c8e0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Sun Dec  3 16:16:53 2006  Akinori MUSHA  <knu@iDaemons.org>
+
+	* ext/digest/lib/digest/hmac.rb: Fix problems with update
+	  timing. [Reported by: oss-ruby@technorama.net]
+
 Sat Dec  2 07:33:53 2006  GOTOU Yuuzou  <gotoyuzo@notwork.org>
 
 	* lib/webrick/httputils.rb (WEBrick::HTTPUtils::FormData::<<):