diff --git a/docs/api/cassandra/cluster.rst b/docs/api/cassandra/cluster.rst
index 195d03a6..3edc22c8 100644
--- a/docs/api/cassandra/cluster.rst
+++ b/docs/api/cassandra/cluster.rst
@@ -106,9 +106,9 @@
 
    .. autoattribute:: encoder
 
-   .. automethod:: execute(statement[, parameters][, timeout][, trace])
+   .. automethod:: execute(statement[, parameters][, timeout][, trace][, custom_payload])
 
-   .. automethod:: execute_async(statement[, parameters][, trace])
+   .. automethod:: execute_async(statement[, parameters][, trace][, custom_payload])
 
    .. automethod:: prepare(statement)