diff --git a/ChangeLog b/ChangeLog
index 116b9ec18d..087866a7f5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sat Jun 20 01:10:13 2015  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
+
+	* NEWS: mention about $SAFE.
+
 Fri Jun 19 14:53:35 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* proc.c (rb_mod_define_method): now requires a block direct to
diff --git a/NEWS b/NEWS
index 19171f3169..95792b6ca2 100644
--- a/NEWS
+++ b/NEWS
@@ -129,6 +129,10 @@ with all sufficient information, see the ChangeLog file.
 
 === Built-in global variables compatibility issues
 
+* $SAFE
+  * $SAFE=2 and $SAFE=3 are obsolete.  If $SAFE is set to 2 or larger,
+    an ArgumentError is raised.
+
 === C API updates
 
 === Build system updates