diff --git a/joplin/config.json b/joplin/config.json
index 9b107d03a..4a6d8ce46 100644
--- a/joplin/config.json
+++ b/joplin/config.json
@@ -22,6 +22,9 @@
   "options": {
     "APP_BASE_URL": "http://your_domain:port"
   },
+  "map": [
+    "config:rw"
+  ],
   "schema": {
     "APP_BASE_URL": "str",
     "DB_CLIENT": "str?",