diff --git a/composer.json b/composer.json
index a06511d9..8ee9fdfc 100644
--- a/composer.json
+++ b/composer.json
@@ -24,10 +24,10 @@
         "psr/http-factory": "^1.0"
     },
     "require-dev": {
-        "friendsofphp/php-cs-fixer": "3.11.0",
-        "phpunit/phpunit": "9.5.10",
+        "friendsofphp/php-cs-fixer": "3.16.0",
+        "phpunit/phpunit": "10.0.19",
         "guzzlehttp/psr7": "2.1.0",
-        "php-mock/php-mock-phpunit": "2.6.0"
+        "php-mock/php-mock-phpunit": "2.7.1"
     },
     "autoload": {
         "psr-4": {