diff --git a/composer.json b/composer.json
index df5bb90..f588ccb 100644
--- a/composer.json
+++ b/composer.json
@@ -8,7 +8,7 @@
     "require-dev": {
         "phpunit/phpunit": "^7.2||^8||^9",
         "apantle/fun-php": "~0.3",
-        "friendsofphp/php-cs-fixer": "^2.16"
+        "friendsofphp/php-cs-fixer": "^3.0"
     },
     "autoload": {
         "files": [ "src/functions.php" ],