diff --git a/ssh_router.sh b/ssh_router.sh
index 306f81a..7895922 100644
--- a/ssh_router.sh
+++ b/ssh_router.sh
@@ -121,6 +121,7 @@ start_container_if_needed() {
     podman run -dit \
       --name "$WORKSPACE" \
       --userns=keep-id \
+      --group-add keep-groups \
       --user "$DEV_USER" \
       --hostname "$WORKSPACE" \
       --label auto-cleanup=true \