diff --git a/composer.json b/composer.json
index 8ad2744..6b191f1 100644
--- a/composer.json
+++ b/composer.json
@@ -31,7 +31,7 @@
     "php-di/php-di": "^7.0",
     "phpstan/phpstan": "^2.1",
     "phpunit/phpunit": "^11.5",
-    "squizlabs/php_codesniffer": "^3.11",
+    "squizlabs/php_codesniffer": "^4.0",
     "sunrise/http-router": "^3.0",
     "symfony/validator": "^7.2",
     "vimeo/psalm": "^6.6"