diff -r a82d7e028458 -r 4c5708988a5a Lib/http/client.py
--- a/Lib/http/client.py	Mon Jun 16 19:26:56 2014 -0400
+++ b/Lib/http/client.py	Mon Jun 16 21:13:25 2014 -0700
@@ -159,6 +159,7 @@
 responses = {
     100: 'Continue',
     101: 'Switching Protocols',
+    102: 'Processing',
 
     200: 'OK',
     201: 'Created',
@@ -167,6 +168,8 @@
     204: 'No Content',
     205: 'Reset Content',
     206: 'Partial Content',
+    207: 'Multi-Status',
+    226: 'IM Used',
 
     300: 'Multiple Choices',
     301: 'Moved Permanently',
@@ -195,6 +198,10 @@
     415: 'Unsupported Media Type',
     416: 'Requested Range Not Satisfiable',
     417: 'Expectation Failed',
+    422: 'Unprocessable Entity',
+    423: 'Locked',
+    424: 'Failed Dependency',
+    426: 'Upgrade Required',
     428: 'Precondition Required',
     429: 'Too Many Requests',
     431: 'Request Header Fields Too Large',
@@ -205,6 +212,8 @@
     503: 'Service Unavailable',
     504: 'Gateway Timeout',
     505: 'HTTP Version Not Supported',
+    507: 'Insufficient Storage',
+    510: 'Not Extended',
     511: 'Network Authentication Required',
 }