diff --git a/docs/api/index.rst b/docs/api/index.rst
index 0da427e4..c5e3b6e1 100644
--- a/docs/api/index.rst
+++ b/docs/api/index.rst
@@ -64,6 +64,8 @@ Graphene Scalars
 
 .. autoclass:: graphene.JSONString()
 
+.. autoclass:: graphene.Base64()
+
 Enum
 ----