Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires symfony/console ^7.0 -> satisfiable by symfony/console[v7.0.0, ..., v7.1.8]. - symfony/console[v7.0.0, ..., v7.1.8] require php >=8.2 -> your php version (8.1.30) does not satisfy that requirement. Problem 2 - symfony/console[v7.0.0, ..., v7.1.8] require php >=8.2 -> your php version (8.1.30) does not satisfy that requirement. - phpbench/phpbench 1.3.1 requires symfony/console ^6.1 || ^7.0 -> satisfiable by symfony/console[v7.0.0, ..., v7.1.8]. - Root composer.json requires phpbench/phpbench ^1.3.1 -> satisfiable by phpbench/phpbench[1.3.1]. Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.