diff --git a/composer.json b/composer.json
index aaa82d1..051f5c3 100644
--- a/composer.json
+++ b/composer.json
@@ -32,6 +32,9 @@
     ]
   },
   "config": {
-    "optimize-autoloader": true
+    "optimize-autoloader": true,
+    "allow-plugins": {
+      "getkirby/composer-installer": true
+    }
   }
 }