Composer update gives error phpunit/phpunit

Question

I recently installed php (8.1.7) and composer (2.3.7) and laravel 9; Now I am getting this error while running the command composer Update In a laravel project, I searched a lot but didn't find the exact solution, all of which did not discuss the issue of phpunit/phpunit.

The error looks like this:

Problem 1
    - phpunit/phpunit[6.0.0, ..., 6.5.14] require php ^7.0 -> your php version (8.1.7) does not satisfy that requirement.
    - Root composer.json requires phpunit/phpunit ~6.0 -> satisfiable by phpunit/phpunit[6.0.0, ..., 6.5.14].```

Answer 1

You must upgrade your phpunit version to correspond with your php 8.1.7 (Select phpunit version 9 or 8, depending on Official documentation ) or downgrade your php version to work with phpunit 6.*.

That's it!