diff --git a/ChangeLog b/ChangeLog
index edfecb3acc..d7e1c7a0ec 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Fri Aug  9 19:13:54 2013  Koichi Sasada  <ko1@atdot.net>
+
+	* NEWS: update about new methods for Binding.
+
 Fri Aug  9 18:48:09 2013  Koichi Sasada  <ko1@atdot.net>
 
 	* proc.c: add Binding#local_variable_get/set/defined?
diff --git a/NEWS b/NEWS
index f27a26f25b..5bc2bf2bf9 100644
--- a/NEWS
+++ b/NEWS
@@ -24,6 +24,12 @@ with all sufficient information, see the ChangeLog file.
 
 === Core classes updates (outstanding ones only)
 
+* Binding
+  * New methods
+    * Binding#local_variable_get(symbol)
+    * Binding#local_variable_set(symbol)
+    * Binding#local_variable_defined?(symbol)
+
 * GC
   * added environment variable:
     * RUBY_HEAP_SLOTS_GROWTH_FACTOR: growth rate of the heap.