diff --git a/ChangeLog b/ChangeLog
index 06e8e69dfb..92416f68bc 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sat Feb  2 10:17:12 2013  Kazuki Tsujimoto  <kazuki@callcc.net>
+
+	* NEWS: add keyword arguments.
+
 Sat Feb  2 07:45:44 2013  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
 
 	* proc.c (proc_curry): Fix arity check [Bug #5747]
diff --git a/NEWS b/NEWS
index c04fd3c80b..fcb2c61ab2 100644
--- a/NEWS
+++ b/NEWS
@@ -399,6 +399,8 @@ with all sufficient information, see the ChangeLog file.
 
 === Language changes
 
+  * Added keyword arguments.
+
   * Added %i and %I for symbol list creation (similar to %w and %W).
 
   * Default source encoding is changed to UTF-8. (was US-ASCII)