diff --git a/composer.json b/composer.json
index ec14f06..e3d6c90 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
     },
     "require": {
         "silverstripe/vendor-plugin": "^1.0",
-        "silverstripe/cms": "~4.0",
+        "silverstripe/cms": "~4.0"
     },
     "autoload": {
         "psr-4": {
@@ -26,6 +26,7 @@
         }
     },
     "extra": {
+        "installer-name": "maintenance-mode",
         "expose": [
             "client"
         ]