diff --git a/dankclaw/compose.yaml b/dankclaw/compose.yaml
index 2a87e4b..5c5f7b8 100644
--- a/dankclaw/compose.yaml
+++ b/dankclaw/compose.yaml
@@ -30,9 +30,11 @@ services:
     devices:
       - /dev/kfd:/dev/kfd
       - /dev/dri:/dev/dri
+    # keep-groups preserves the launching user's real supplementary groups;
+    # a literal `render` entry fails at container start under rootless podman
+    # because the group name cannot be resolved inside the user namespace.
     group_add:
-      - video
-      - render
+      - keep-groups
     volumes:
       - /home/dank/comfyui-data/models:/opt/ComfyUI/models
       - /home/dank/comfyui-data/input:/opt/ComfyUI/input