diff --git a/docs/topics/signing.txt b/docs/topics/signing.txt
index d910a7af52..43d1b00c4a 100644
--- a/docs/topics/signing.txt
+++ b/docs/topics/signing.txt
@@ -185,12 +185,12 @@ and tuples) if you pass in a tuple, you will get a list from
     >>> signing.loads(value)
     ['a', 'b', 'c']
 
-.. function:: dumps(obj, key=None, salt='django.core.signing', compress=False)
+.. function:: dumps(obj, key=None, salt='django.core.signing', serializer=JSONSerializer, compress=False)
 
     Returns URL-safe, sha1 signed base64 compressed JSON string. Serialized
     object is signed using :class:`~TimestampSigner`.
 
-.. function:: loads(string, key=None, salt='django.core.signing', max_age=None)
+.. function:: loads(string, key=None, salt='django.core.signing', serializer=JSONSerializer, max_age=None)
 
     Reverse of ``dumps()``, raises ``BadSignature`` if signature fails.
     Checks ``max_age`` (in seconds) if given.