diff --git a/ChangeLog b/ChangeLog
index 7152c2c06c..7a4bc80f37 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Wed Dec 30 20:45:45 2015  SHIBATA Hiroshi  <hsbt@ruby-lang.org>
+
+	* lib/webrick/httpstatus.rb: Added HTTP 451 Status Code.
+	  [fix GH-1167] Patch by @MuhammetDilmac
+	  https://tools.ietf.org/html/draft-tbray-http-legally-restricted-status-00
+
 Wed Dec 30 20:25:52 2015  SHIBATA Hiroshi  <hsbt@ruby-lang.org>
 
 	* doc/syntax/calling_methods.rdoc: fix old operator for safe navigation
diff --git a/lib/webrick/httpstatus.rb b/lib/webrick/httpstatus.rb
index 8664da26d0..ded5aa2e60 100644
--- a/lib/webrick/httpstatus.rb
+++ b/lib/webrick/httpstatus.rb
@@ -99,6 +99,7 @@ module WEBrick
       428 => 'Precondition Required',
       429 => 'Too Many Requests',
       431 => 'Request Header Fields Too Large',
+      451 => 'Unavailable For Legal Reasons',
       500 => 'Internal Server Error',
       501 => 'Not Implemented',
       502 => 'Bad Gateway',