diff --git a/composer.json b/composer.json
index 65fd4eb..3fd9062 100644
--- a/composer.json
+++ b/composer.json
@@ -26,7 +26,7 @@
     "doctrine/instantiator": "^1.4",
     "php-coveralls/php-coveralls": "^2.2",
     "phpspec/prophecy": "^1.15",
-    "phpunit/phpunit": "^9.6",
+    "phpunit/phpunit": "^9.6 || ^10.0",
     "prooph/php-cs-fixer-config": "^0.5"
   },
   "autoload": {