diff --git a/ChangeLog b/ChangeLog
index a0ed168061..fd6a73233e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,18 @@
+Mon Jul 29 16:53:18 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* hash.c (rb_hash_initialize_copy): copy st_table type even if empty.
+	  [ruby-core:56256] [Bug #8703]
+
+Mon Jul 29 16:34:29 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* hash.c (rb_hash_initialize_copy): clear old table before copy new
+	  table.
+
+Mon Jul 29 16:34:09 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* hash.c (rb_hash_assoc): aggregate object can be initialized only
+	  with link time constants.
+
 Mon Jul 29 14:54:44 2013  Masaki Matsushita  <glass.saga@gmail.com>
 
 	* hash.c (rb_hash_assoc): performance improvement by replacing