diff --git a/composer.json b/composer.json
index 8c3731cad..283c72e37 100644
--- a/composer.json
+++ b/composer.json
@@ -106,7 +106,8 @@
     },
     "conflict": {
         "doctrine/common": ">=3.0",
-        "doctrine/persistence": "<1.3"
+        "doctrine/persistence": "<1.3",
+        "friendsofphp/php-cs-fixer": ">=2.19.0"
     },
     "config": {
         "preferred-install": {