diff --git a/composer.json b/composer.json
index 3664bda..a9fe5c5 100644
--- a/composer.json
+++ b/composer.json
@@ -32,7 +32,7 @@
         "friendsofphp/php-cs-fixer": "^3.0",
         "guzzlehttp/guzzle": "^6.3|^7.0",
         "mockery/mockery": "^1.3",
-        "orchestra/testbench": "^5.0|^6.0|^7.0",
+        "orchestra/testbench": "8.6.3",
         "phpunit/phpunit": "^9.1"
     },
     "autoload": {