Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires php >=8.2 but your php version (8.1.34) does not satisfy that requirement. Problem 2 - Root composer.json requires mrpunyapal/rector-pest ^0.2 -> satisfiable by mrpunyapal/rector-pest[0.2.0, 0.2.1, 0.2.2, 0.2.3]. - mrpunyapal/rector-pest[0.2.0, 0.2.1, 0.2.2, 0.2.3] require php ^8.2 -> your php version (8.1.34) does not satisfy that requirement. Problem 3 - Root composer.json requires peckphp/peck ^0.2 -> satisfiable by peckphp/peck[v0.2.0]. - peckphp/peck v0.2.0 requires php ^8.2 -> your php version (8.1.34) does not satisfy that requirement. Problem 4 - Root composer.json requires phpro/grumphp-shim ^2.19 -> satisfiable by phpro/grumphp-shim[v2.19.0]. - phpro/grumphp-shim v2.19.0 requires php ~8.2.0 || ~8.3.0 || ~8.4.0 || ~8.5.0 -> your php version (8.1.34) does not satisfy that requirement.