diff --git a/composer.json b/composer.json
index a71c3c4..1118f5b 100644
--- a/composer.json
+++ b/composer.json
@@ -37,7 +37,10 @@
         "friends-of-behat/mink-extension": "^2.5"
     },
     "config": {
-        "sort-packages": true
+        "sort-packages": true,
+        "allow-plugins": {
+            "dealerdirect/phpcodesniffer-composer-installer": true
+        }
     },
     "extra": {
         "branch-alias": {