diff --git a/ChangeLog b/ChangeLog
index 36ff6b6172..b9ae953088 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Tue Oct  8 00:14:53 2013  Akinori MUSHA  <knu@iDaemons.org>
+
+	* misc/ruby-additional.el: Add a standard header and footer,
+	  including (provide 'ruby-additional).
+
 Mon Oct  7 22:52:45 2013  Akinori MUSHA  <knu@iDaemons.org>
 
 	* misc/ruby-electric.el (ruby-electric-space-can-be-expanded-p):
diff --git a/misc/ruby-additional.el b/misc/ruby-additional.el
index 85cfdd8d90..f44e481c49 100644
--- a/misc/ruby-additional.el
+++ b/misc/ruby-additional.el
@@ -1,4 +1,20 @@
-;; missing functions in Emacs 24.
+;;; ruby-additional.el --- ruby-mode extensions yet to be merged into Emacs
+
+;; Authors: Yukihiro Matsumoto, Nobuyoshi Nakada, Akinori MUSHA
+;; URL: http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/misc/
+;; Created: 3 Sep 2012
+;; Package-Requires: ((ruby-mode "1.2"))
+;; Keywords: ruby, languages
+
+;;; Commentary:
+;;
+;; This package contains ruby-mode extensions yet to be merged into
+;; the Emacs distribution.
+
+;;; Code:
+
+(eval-when-compile
+  (require 'ruby-mode))
 
 (eval-after-load 'ruby-mode
   '(progn
@@ -98,3 +114,7 @@ Now encoding needs to be set always explicitly actually."
                       (insert "# -*- coding: " coding-system " -*-\n")))))))
 
      ))
+
+(provide 'ruby-additional)
+
+;;; ruby-additional.el ends here