Laravel-medialibrary: unable to install on latest laravel?

[snipiba]

Problem 1
- Conclusion: remove laravel/framework v5.6.12
- Conclusion: don't install illuminate/pipeline v5.5.39
- Conclusion: don't install illuminate/pipeline v5.5.37
- Conclusion: don't install illuminate/pipeline v5.5.36
- Conclusion: don't install illuminate/pipeline v5.5.35
- Conclusion: don't install illuminate/pipeline v5.5.34
- Conclusion: don't install illuminate/pipeline v5.5.33
- Conclusion: don't install illuminate/pipeline v5.5.28
- Conclusion: don't install illuminate/pipeline v5.5.17
- Conclusion: don't install illuminate/pipeline v5.5.16
- Installation request for spatie/laravel-medialibrary 6.0.0 -> satisfiable by spatie/laravel-medialibrary[6.0.0].
- Conclusion: don't install illuminate/pipeline v5.5.2
- don't install illuminate/pipeline 5.5.x-dev|don't install laravel/framework v5.6.12
- don't install illuminate/pipeline 5.5.x-dev|don't install laravel/framework v5.6.12
- spatie/laravel-medialibrary 6.0.0 requires illuminate/pipeline ~5.5.0 -> satisfiable by illuminate/pipeline[5.5.x-dev, v5.5.0, v5.5.16, v5.5.17, v5.5.2, v5.5.28, v5.5.33, v5.5.34, v5.5.35, v5.5.36, v5.5.37, v5.5.39].
- Conclusion: don't install illuminate/pipeline v5.5.0
- Installation request for laravel/framework (locked at v5.6.12, required as 5.6.*) -> satisfiable by laravel/framework[v5.6.12].

[freekmurze]

The 6.0.0 is not compatible with Laravel 5.6. The last point release is. Please install the package by running php artisan require spatie/laravel-medialibrary. Make sure the package is not in your composer.json before running this command.

[snipiba]

are u sure with php artisan require command? not composer require? ;)