diff --git a/composer.json b/composer.json
index 307a6f1..de06410 100644
--- a/composer.json
+++ b/composer.json
@@ -50,7 +50,7 @@
     "require-dev": {
         "laminas/laminas-coding-standard": "~2.5.0",
         "laminas/laminas-diactoros": "^3.3",
-        "phpunit/phpunit": "^10.5.5",
+        "phpunit/phpunit": "^11.0.0",
         "psalm/plugin-phpunit": "^0.18.4",
         "vimeo/psalm": "^5.18"
     },