diff --git a/ChangeLog b/ChangeLog
index 74a9998a51..0124ea40c9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Sat Apr 23 13:27:25 2016  Yuichiro Kaneko  <yui-knk@ruby-lang.org>
+
+	* NEWS: Add descriptions for Time#to_time updates.
+	  [Bug #12271]
+
 Sat Apr 23 13:21:24 2016  Yuichiro Kaneko  <yui-knk@ruby-lang.org>
 
 	* NEWS: Add descriptions for DateTime#to_time updates.
diff --git a/NEWS b/NEWS
index eb048ad179..4af7ce6cef 100644
--- a/NEWS
+++ b/NEWS
@@ -86,6 +86,10 @@ with all sufficient information, see the ChangeLog file or Redmine
 
 === Stdlib compatibility issues (excluding feature bug fixes)
 
+* Time
+
+  * Time#to_time now preserves timezone.  [Bug #12271]
+
 * DateTime
 
   * DateTime#to_time now preserves timezone.  [Bug #12189]