diff --git a/composer.json b/composer.json
index 5586b30..74f0fad 100644
--- a/composer.json
+++ b/composer.json
@@ -45,7 +45,7 @@
     "require-dev": {
         "laminas/laminas-coding-standard": "^3.0",
         "laminas/laminas-test": "^4.10",
-        "phpunit/phpunit": "^11.3.0",
+        "phpunit/phpunit": "^12.0.0",
         "psalm/plugin-phpunit": "^0.19.0",
         "vimeo/psalm": "^6.13.1"
     },