The latest version available on packagist.org is 6.1.1. The 6.2 release hasn't been picked up by packagist.org it seems, making it impossible to install the package via _composer require_ in a Laravel 8 project.
Thanks for having a look!
Sorry all. Not too sure what packagist didn't pick that up. I manually updated it yesterday. Let me know if it's working correctly. I'm going to look into the why this evening.