diff --git a/php/containers.json b/php/containers.json
index 1fadc91f..fc46b73d 100644
--- a/php/containers.json
+++ b/php/containers.json
@@ -525,7 +525,8 @@
       ],
       "networks": [
         "nextcloud-aio"
-      ]
+      ],
+      "read_only": true
     },
     {
       "container_name": "nextcloud-aio-fulltextsearch",