diff --git a/composer.json b/composer.json
index 434b111..0f1b935 100644
--- a/composer.json
+++ b/composer.json
@@ -14,7 +14,7 @@
     "firebase/php-jwt": "^6.4"
   },
   "require-dev": {
-    "phpunit/phpunit": "^9.6",
+    "phpunit/phpunit": "^10.3",
     "phpstan/phpstan": "^1.10"
   },
   "autoload": {