diff --git a/docs/ref/templates/builtins.txt b/docs/ref/templates/builtins.txt
index c0ae8cf36d..70f0ffd0d1 100644
--- a/docs/ref/templates/builtins.txt
+++ b/docs/ref/templates/builtins.txt
@@ -1970,7 +1970,7 @@ For example::
 If ``value`` is ``"http://www.example.org/foo?a=b&c=d"``, the output will be
 ``"http%3A//www.example.org/foo%3Fa%3Db%26c%3Dd"``.
 
-.. versionadded:: 1.1
+.. versionadded:: 1.3
 
 An optional argument containing the characters which should not be escaped can
 be provided.