diff --git a/composer.json b/composer.json
index c12ef94f1..c1d36b1d0 100644
--- a/composer.json
+++ b/composer.json
@@ -73,6 +73,9 @@
         }
     },
     "config": {
-        "sort-packages": true
+        "sort-packages": true,
+        "allow-plugins": {
+            "phpstan/extension-installer": true
+        }
     }
 }