diff --git a/ChangeLog b/ChangeLog
index a87be2f38e..59673c44ec 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Mon Aug 16 23:16:21 2010  Yusuke Endoh  <mame@tsg.ne.jp>
+
+	* NEWS: updated.  a patch from Kazuhiro NISHIYAMA in [ruby-dev:42001].
+
 Sun Aug 15 19:59:58 2010  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
 
 	* lib/webrick/httpresponse.rb (WEBrick::HTTPResponse#set_error):
diff --git a/NEWS b/NEWS
index 5ff0579711..c80a6cb5b9 100644
--- a/NEWS
+++ b/NEWS
@@ -375,6 +375,10 @@ with all sufficient information, see the ChangeLog file.
       * socket option name
       * shutdown's argument
 
+* stringio
+  * new methods:
+    * StringIO#read_nonblock
+    * StringIO#write_nonblock
 * pathname
   * new methods:
     * Pathname#binread
@@ -431,6 +435,8 @@ with all sufficient information, see the ChangeLog file.
 * zlib
   * new methods:
     * Zlib::GzipFile#path
+    * Zlib.#adler32_combine
+    * Zlib.#crc32_combine
 
 * rbconfig
   * new methods: