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 on a laravel project, I searched a lot but couldn't find exact solution, all of them were not discussing 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 have to upgrade your phpunit version to correspond with your php 8.1.7 ( choose between phpunit version 9 or 8 , according to the official documentation ) or downgrade your php version to works with phpunit 6.* .

That's it !