Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires pestphp/pest ^1.21|^2.0|^3.7 -> satisfiable by pestphp/pest[v1.21.0, ..., 1.x-dev, v2.0.1, ..., 2.x-dev, v3.7.0, ..., 3.x-dev]. - Root composer.json requires phpunit/phpunit ^9.5|^10.0|^11.0 -> satisfiable by phpunit/phpunit[9.6.33, 9.6.34, 9.6.x-dev, 10.5.62, 10.5.63, 10.5.x-dev, 11.5.50, ..., 11.5.x-dev]. - pestphp/pest v2.36.0 conflicts with phpunit/phpunit >10.5.36. - pestphp/pest v2.36.0 conflicts with phpunit/phpunit 10.5.x-dev. - pestphp/pest v2.36.0 requires phpunit/phpunit ^10.5.36 -> satisfiable by phpunit/phpunit[10.5.62, 10.5.63, 10.5.x-dev]. - Conclusion: install pestphp/pest v2.36.0 (conflict analysis result)