diff --git a/composer.json b/composer.json
index 2a35f6b..248735f 100644
--- a/composer.json
+++ b/composer.json
@@ -28,7 +28,7 @@
     }
   },
   "require-dev": {
-    "phpunit/phpunit": "^11.0",
+    "phpunit/phpunit": "^11.0 || ^13.0",
     "phpstan/phpstan": "^2.1",
     "phpstan/phpstan-phpunit": "^2.0",
     "squizlabs/php_codesniffer": "^4.0"