Change test files directory in Laravel Dusk

I want to start using Laravel Dusk to my browser tests, but my test files are under resources/tests. How can I configure Dusk to search files in that directory? In composer I have added: "psr-4": { "Tests\\": "resources/tests/" } but it's not working. I installed Dusk 1.1.1, since I just upgraded to Laravel 5.4

Thanks!