diff --git a/apiserver/docs/source/api.rst b/apiserver/docs/source/api.rst
index 4b47a7d..4200f58 100644
--- a/apiserver/docs/source/api.rst
+++ b/apiserver/docs/source/api.rst
@@ -21,6 +21,7 @@ Registration
     :json email:
     :json boolean existing_member: If ``true``, will link old portal objects based
         on email match.
+    :json bypass_code: allows them to register from outside Protospace
 
     **Example response**: