diff --git a/composer.json b/composer.json
index 502e6db..15bef4b 100644
--- a/composer.json
+++ b/composer.json
@@ -14,7 +14,7 @@
         "php": "~8.4.0 || ~8.5.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^12.5.17",
+        "phpunit/phpunit": "^13.1.1",
         "slam/php-cs-fixer-extensions": "^3.15.0"
     },
     "autoload": {