Update README.md

README.md

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 This package is a collection of classes you can use to standardize data formats in your Laravel application.
 It uses the Service Container to easily extend or override the formatter classes.
 
-The package requires PHP ^8.0 and Laravel ^8.x.
-Future versions of PHP & Laravel will be supported.
+The package requires PHP ^8.x and Laravel ^8.67.
 
 [![PHP Version](https://img.shields.io/badge/php-^8.x-777BB4?style=flat-square&logo=php)](https://php.net)
 [![Laravel Version](https://img.shields.io/badge/laravel-^8.x-FF2D20?style=flat-square&logo=laravel)](https://laravel.com)