Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires illuminate/contracts ^10.0|^11.0|^12.0 -> satisfiable by illuminate/contracts[v10.0.0, ..., 10.x-dev, v11.0.0, ..., 11.x-dev, v12.0.0, v12.0.1, 12.x-dev], laravel/framework[v10.0.0, ..., 10.x-dev]. - Root composer.json requires laravel/framework 10.* -> satisfiable by laravel/framework[v10.0.0, ..., 10.x-dev]. - Root composer.json requires pestphp/pest ^3.7.4 -> satisfiable by pestphp/pest[v3.7.4, 3.x-dev]. - nunomaduro/collision[v8.6.1, ..., v8.x-dev] conflict with laravel/framework <11.39.1 || >=13.0.0. - Conclusion: don't install illuminate/contracts v10.48.28 (conflict analysis result) - Conclusion: don't install illuminate/contracts v11.44.0 (conflict analysis result) - Conclusion: don't install illuminate/contracts v12.0.1 (conflict analysis result) - Conclusion: install nunomaduro/collision v8.6.1 (conflict analysis result) Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.