diff --git a/plugins/modules/docker_swarm_service.py b/plugins/modules/docker_swarm_service.py
index 0d72110d..bd773ea6 100644
--- a/plugins/modules/docker_swarm_service.py
+++ b/plugins/modules/docker_swarm_service.py
@@ -18,6 +18,7 @@ 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: