diff --git a/rest_framework/status.py b/rest_framework/status.py
index 714f3221b..c016b63c6 100644
--- a/rest_framework/status.py
+++ b/rest_framework/status.py
@@ -3,6 +3,7 @@ Descriptive HTTP status codes, for code readability.
 
 See RFC 2616 - http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html
 And RFC 6585 - http://tools.ietf.org/html/rfc6585
+And RFC 4918 - https://tools.ietf.org/html/rfc4918
 """
 from __future__ import unicode_literals