Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires pestphp/pest ^3.0 -> satisfiable by pestphp/pest[v3.0.0, 3.x-dev]. - pestphp/pest[v3.0.0, ..., 3.x-dev] require phpunit/phpunit ^11.3.4 -> found phpunit/phpunit[dev-main, 11.3.4, 11.3.x-dev, 11.4.x-dev (alias of dev-main)] but it conflicts with your root composer.json require (^10.5). Problem 2 - Root composer.json requires pestphp/pest-plugin-laravel ^2.4 -> satisfiable by pestphp/pest-plugin-laravel[v2.4.0, 2.x-dev]. - pestphp/pest-plugin-laravel[v2.4.0, ..., 2.x-dev] require pestphp/pest ^2.34.7 -> found pestphp/pest[v2.34.7, ..., 2.x-dev] but it conflicts with your root composer.json require (^3.0).