diff --git a/composer.json b/composer.json
index 254266e..1bf71b2 100644
--- a/composer.json
+++ b/composer.json
@@ -13,7 +13,7 @@
     },
     "require": {
         "php": "^8.1",
-        "phpunit/phpunit": "^10.0 || ^11.0 || ^12.0"
+        "phpunit/phpunit": "^10.0 || ^11.0 || ^12.0 || ^13.0"
     },
     "require-dev": {
         "digitalrevolution/phpunit-file-coverage-inspection": "^3.0",