diff --git a/composer.json b/composer.json
index aeed2060e3..bb7caa5ed3 100644
--- a/composer.json
+++ b/composer.json
@@ -35,10 +35,11 @@
         }
     },
     "require-dev": {
+        "friendsofphp/php-cs-fixer": "^3",
         "phpunit/phpunit": "^7|^8|^9",
         "php-parallel-lint/php-parallel-lint": "^1.3",
         "yoast/phpunit-polyfills": "2.0",
-        "rector/rector": "^1.2"
+        "rector/rector": "0.12.19 || ^1.2"
     },
     "archive": {
         "exclude": ["/demos", "/documentation", "/tests"]