diff --git a/ChangeLog b/ChangeLog
index c2a7d99e76..040ec9fe6d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Tue Jan 03 19:13:05 2012  Ayumu AIZAWA  <ayumu.aizawa@gmail.com>
+
+	* test/rexml/test_sax.rb: add require 'rexml/document'.
+	  [Backport #5834] [ruby-dev:45079]
+
 Tue Jan  3 19:05:42 2012  Naohisa Goto  <ngotogenome@gmail.com>
 
 	* include/ruby/defines.h (FLUSH_REGISTER_WINDOWS): move sparc asm code
diff --git a/test/rexml/test_sax.rb b/test/rexml/test_sax.rb
index f5d7fb44ce..8873e1703d 100644
--- a/test/rexml/test_sax.rb
+++ b/test/rexml/test_sax.rb
@@ -1,6 +1,7 @@
 require "rexml_test_utils"
 require 'rexml/sax2listener'
 require 'rexml/parsers/sax2parser'
+require 'rexml/document'
 
 class SAX2Tester < Test::Unit::TestCase
   include REXMLTestUtils
diff --git a/version.h b/version.h
index 906aee7fa2..fd7827cebe 100644
--- a/version.h
+++ b/version.h
@@ -1,5 +1,5 @@
 #define RUBY_VERSION "1.9.3"
-#define RUBY_PATCHLEVEL 17
+#define RUBY_PATCHLEVEL 18
 
 #define RUBY_RELEASE_DATE "2012-01-03"
 #define RUBY_RELEASE_YEAR 2012