diff --git a/manifest.yaml b/manifest.yaml
index 3654fca4..b9187ab7 100644
--- a/manifest.yaml
+++ b/manifest.yaml
@@ -41,6 +41,7 @@ arguments:
           - temporal
           - kafka
           - python
+          - rabbitmq
     description: Any valid built-in service activities can be supplied here and they will be provided. The `service` flag must be set to true. Valid values for this are `http`, `grpc`, `temporal`, `python` and `kafka`.
   aws.useKIAM:
     schema: