diff --git a/composer.json b/composer.json
index cfb5dbd..f45cd9b 100644
--- a/composer.json
+++ b/composer.json
@@ -23,7 +23,7 @@
     "require-dev": {
         "laminas/laminas-coding-standard": "~3.1.0",
         "laminas/laminas-diactoros": "^3.8.0",
-        "phpunit/phpunit": "^11.5.42",
+        "phpunit/phpunit": "^13.0.0",
         "psalm/plugin-phpunit": "^0.19.5",
         "vimeo/psalm": "^6.13.1"
     },