diff --git a/composer.json b/composer.json
index a43ed11e0..3022dbc50 100644
--- a/composer.json
+++ b/composer.json
@@ -32,7 +32,7 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^5.7.4",
-        "friendsofphp/php-cs-fixer": "^2.3",
+        "friendsofphp/php-cs-fixer": "^2.3|^2.4|^2.5|^2.6|^2.7|^2.8|^2.9",
         "squizlabs/php_codesniffer": "^3.0",
         "php-coveralls/php-coveralls": "^2.0"
     },