diff --git a/composer.json b/composer.json
index e29e7dd..c3075fb 100644
--- a/composer.json
+++ b/composer.json
@@ -23,7 +23,7 @@
   },
   "require-dev": {
     "phpunit/phpunit": "^5.7 || ^7.3",
-    "friendsofphp/php-cs-fixer": "^2.0",
+    "friendsofphp/php-cs-fixer": "^3.0",
     "php-coveralls/php-coveralls": "^2.1"
   },
   "autoload": {