diff --git a/composer.json b/composer.json
index f9c5dbb..81be16c 100644
--- a/composer.json
+++ b/composer.json
@@ -41,5 +41,10 @@
         "branch-alias": {
             "dev-develop": "0.4.x-dev"
         }
+    },
+    "config": {
+        "allow-plugins": {
+            "phpstan/extension-installer": true
+        }
     }
 }