diff --git a/ansible/plays/services/offlineimap/docker-compose.yaml b/ansible/plays/services/offlineimap/docker-compose.yaml
index 8c6d9df..fd9a373 100644
--- a/ansible/plays/services/offlineimap/docker-compose.yaml
+++ b/ansible/plays/services/offlineimap/docker-compose.yaml
@@ -3,7 +3,7 @@ services:
   offlineimap:
     image: registry.tobiasmanske.de/offlineimap:latest
     volumes:
-      - ./offlineimap.conf:/root/.offlineimaprc
+      - ./offlineimap.conf:/root/.offlineimaprc:ro,Z
       - maildata:/data
     restart: unless-stopped