diff --git a/ChangeLog b/ChangeLog
index 9c455b43f5..b313e1e164 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -108,9 +108,9 @@ Tue Nov 10 14:01:59 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 Tue Nov 10 11:25:29 2015  NARUSE, Yui  <naruse@ruby-lang.org>
 
-	* time.c (rb_timespec_now): added.
+	* time.c (rb_timespec_now): added.  [Feature #11558]
 
-	* time.c (rb_time_timespec_new): added.
+	* time.c (rb_time_timespec_new): added.  [Feature #11558]
 
 Tue Nov 10 06:17:17 2015  Eric Wong  <e@80x24.org>
 
diff --git a/NEWS b/NEWS
index d71b913142..6724aaf402 100644
--- a/NEWS
+++ b/NEWS
@@ -198,7 +198,7 @@ with all sufficient information, see the ChangeLog file.
 
 * Net::FTP
   * Connections are in passive mode per default now.  The default mode can
-    be changed by Net::FTP.default_passive=.
+    be changed by Net::FTP.default_passive=.  [Feature #11612]
 
 * Rake
   * Rake is removed from stdlib.
@@ -216,9 +216,10 @@ with all sufficient information, see the ChangeLog file.
   superclass, as well as definitions in ruby level.
 
 * rb_timespec_now() is added to fetch current datetime as struct timespec.
+  [Feature #11558]
 
 * rb_time_timespec_new() is added to create a time object with epoch,
-  nanosecond, and UTC/localtime/time offset arguments.
+  nanosecond, and UTC/localtime/time offset arguments.  [Feature #11558]
 
 === Build system updates