diff --git a/composer.json b/composer.json
index 0571020..4e9d4a4 100644
--- a/composer.json
+++ b/composer.json
@@ -29,8 +29,7 @@
     "require-dev": {
         "phpunit/phpunit": "~7.0|~8.0|~9.0",
         "phpstan/phpstan": "^0.12",
-        "phpstan/phpstan-phpunit": "^0.12",
-        "friendsofphp/php-cs-fixer": "^3.0.0"
+        "phpstan/phpstan-phpunit": "^0.12"
     },
     "suggest": {
         "splitbrain/php-archive": "Greatly reduces memory usage for the geoip2:update command"