diff --git a/composer.json b/composer.json
index a427cc33..6f2c467c 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
     },
     "require-dev": {
         "doctrine/coding-standard": "^14.0.0",
-        "phpunit/phpunit": "^12.5.2",
+        "phpunit/phpunit": "^13.3.1",
         "psalm/plugin-phpunit": "^0.19.5",
         "roave/security-advisories": "dev-latest",
         "vimeo/psalm": "^6.13.1"