diff --git a/composer.json b/composer.json
index c187734..2fbefbc 100644
--- a/composer.json
+++ b/composer.json
@@ -13,7 +13,7 @@
         "webmozart/assert": "^1.11"
     },
     "require-dev": {
-        "phpunit/phpunit": "^9.5.26",
+        "phpunit/phpunit": "^10.0",
         "php-parallel-lint/php-parallel-lint": "^1.3",
         "phpstan/extension-installer": "^1.2",
         "symplify/easy-ci": "^11.1",