diff --git a/plugins/modules/docker_swarm_service.py b/plugins/modules/docker_swarm_service.py
index 55f911fb..dee057e7 100644
--- a/plugins/modules/docker_swarm_service.py
+++ b/plugins/modules/docker_swarm_service.py
@@ -17,6 +17,7 @@ author:
 short_description: docker swarm service
 description:
   - Manages docker services via a swarm manager node.
+  - This modules does not support updating services in a stack.
 options:
   args:
     description: