diff --git a/composer.json b/composer.json
index 8400ab9..80c9d09 100644
--- a/composer.json
+++ b/composer.json
@@ -30,5 +30,10 @@
         "branch-alias": {
             "dev-develop": "0.3.x-dev"
         }
+    },
+    "config": {
+        "allow-plugins": {
+            "phpstan/extension-installer": true
+        }
     }
 }