diff --git a/composer.json b/composer.json
index 22d129a..0b8b255 100644
--- a/composer.json
+++ b/composer.json
@@ -10,7 +10,7 @@
     "require-dev": {
         "patchlevel/event-sourcing": "^3.8",
         "symfony/http-kernel": "^7.0.0 || ^8.0.0",
-        "phpunit/phpunit": "^12.0",
+        "phpunit/phpunit": "^13.0",
         "patchlevel/coding-standard": "^1.3"
     },
     "autoload": {