diff --git a/composer.json b/composer.json
index c85a3ca81..fd9868eeb 100644
--- a/composer.json
+++ b/composer.json
@@ -39,5 +39,11 @@
         "psr-4": {
             "Doctrine\\Tests\\": "tests/Doctrine/Tests"
         }
+    },
+    "config": {
+        "allow-plugins": {
+            "dealerdirect/phpcodesniffer-composer-installer": true,
+            "composer/package-versions-deprecated": true
+        }
     }
 }