diff --git a/docs/ref/class-based-views/base.txt b/docs/ref/class-based-views/base.txt
index 4ad017c3422..24058311a4c 100644
--- a/docs/ref/class-based-views/base.txt
+++ b/docs/ref/class-based-views/base.txt
@@ -222,6 +222,8 @@ RedirectView
 
     .. attribute:: pattern_name
 
+        .. versionadded:: 1.6
+
         The name of the URL pattern to redirect to. Reversing will be done
         using the same args and kwargs as are passed in for this view.