diff --git a/composer.json b/composer.json
index da32db5a0a19..8616e15d7162 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
     "require-dev": {
         "codeigniter/coding-standard": "^1.1",
         "fakerphp/faker": "^1.9",
-        "friendsofphp/php-cs-fixer": "^3.1",
+        "friendsofphp/php-cs-fixer": "3.4.*",
         "mikey179/vfsstream": "^1.6",
         "nexusphp/cs-config": "^3.3",
         "nexusphp/tachycardia": "^1.0",