diff --git a/composer.json b/composer.json
index 859ec8b..ebcd40f 100644
--- a/composer.json
+++ b/composer.json
@@ -28,7 +28,7 @@
         "thecodingmachine/safe": "^1.1.3"
     },
     "require-dev": {
-        "friendsofphp/php-cs-fixer": "2.18.3",
+        "friendsofphp/php-cs-fixer": "2.18.4",
         "mockery/mockery": "^1.4.3",
         "narrowspark/coding-standard": "^5.3.2",
         "phpstan/phpstan-mockery": "^0.12.13",