diff --git a/composer.json b/composer.json
index 5b83d44..14b215a 100644
--- a/composer.json
+++ b/composer.json
@@ -35,7 +35,7 @@
         "symfony/mime": "^8.1"
     },
     "require-dev": {
-        "phpunit/phpunit": "^11.0",
+        "phpunit/phpunit": "^11.0 || ^13.0",
         "phpstan/phpstan": "^2.0"
     },
     "autoload": {