Update README.md

README.md

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 ![Tests](https://github.com/facade/ignition/workflows/Run%20tests/badge.svg)
 [![Total Downloads](https://img.shields.io/packagist/dt/facade/ignition.svg?style=flat-square)](https://packagist.org/packages/facade/ignition)
 
-[Ignition](https://flareapp.io/docs/ignition-for-laravel/introduction) is a beautiful and customizable error page for Laravel applications running on Laravel 5.5 and newer. It is the default error page for all Laravel 6 applications. It also allows to publicly share your errors on [Flare](https://flareapp.io). If configured with a valid Flare API key, your errors in production applications will be tracked, and you'll get notified when they happen.
+[Ignition](https://flareapp.io/docs/ignition-for-laravel/introduction) is a beautiful and customizable error page for Laravel applications running on Laravel 5.5 up Laravel 8. It is the default error page for all Laravel 6 applications. It also allows to publicly share your errors on [Flare](https://flareapp.io). If configured with a valid Flare API key, your errors in production applications will be tracked, and you'll get notified when they happen.
 
 ![Screenshot of ignition](https://facade.github.io/ignition/screenshot.png)
 
+## Using Laravel 8 or above?
+
+If you're on Laravel 8 or above, you can switch to [spatie/laravel-ignition](https://github.com/spatie/laravel-ignition), which is a drop in replacement.
+
+To do so replace `facade/ignition` with `"spatie/laravel-ignition": "^1.0"` in your application's `composer.json` file.
+
 ## Official Documentation
 
 The official documentation for Ignition can be found on the [Flare website](https://flareapp.io/docs/ignition-for-laravel/installation).