Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires nunomaduro/collision ^8.5 -> satisfiable by nunomaduro/collision[v8.5.0, v8.x-dev]. - nunomaduro/collision[v8.5.0, ..., v8.x-dev] require php ^8.2.0 -> your php version (8.1.31) does not satisfy that requirement. Problem 2 - Root composer.json requires orchestra/testbench ^9.9 -> satisfiable by orchestra/testbench[v9.9.0, 9.x-dev]. - orchestra/testbench[v9.9.0, ..., 9.x-dev] require php ^8.2 -> your php version (8.1.31) does not satisfy that requirement. Problem 3 - Root composer.json requires pestphp/pest-plugin-laravel ^3.0 -> satisfiable by pestphp/pest-plugin-laravel[v3.0.0, 3.x-dev]. - pestphp/pest-plugin-laravel[v3.0.0, ..., 3.x-dev] require php ^8.2.0 -> your php version (8.1.31) does not satisfy that requirement. Problem 4 - Root composer.json requires larastan/larastan ^3.0 -> satisfiable by larastan/larastan[v3.0.0, v3.0.1, v3.0.2, 3.x-dev]. - larastan/larastan[v3.0.0, ..., 3.x-dev] require php ^8.2 -> your php version (8.1.31) does not satisfy that requirement.