diff --git a/composer.json b/composer.json
index 4db50c3..0590532 100644
--- a/composer.json
+++ b/composer.json
@@ -24,7 +24,6 @@
     ],
     "require": {
         "php": "^8.0",
-        "ext-json": "*",
         "league/openapi-psr7-validator": "^0.22",
         "nyholm/psr7": "^1.3.1",
         "psr/cache": "^1.0 || ^2.0 || ^3.0",
@@ -35,7 +34,7 @@
         "symfony/psr-http-message-bridge": "^2.0 || ^6.0 || ^7.0"
     },
     "require-dev": {
-        "friendsofphp/php-cs-fixer": "^3.17",
+        "friendsofphp/php-cs-fixer": "^3.80",
         "phpstan/phpstan": "^2.1.0",
         "phpunit/phpunit": "^9.6",
         "rector/rector": "^2.1.0"