diff --git a/composer.json b/composer.json
index f54d5362..85e03e33 100644
--- a/composer.json
+++ b/composer.json
@@ -16,7 +16,7 @@
   "require-dev": {
     "friendsofphp/php-cs-fixer": "3.46",
     "kubawerlos/php-cs-fixer-custom-fixers": "3.18",
-    "phpunit/phpunit": "^9.0",
+    "phpunit/phpunit": "^9.0 || ^10.0",
     "vimeo/psalm": "^5.0"
   },
   "autoload": {