Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires jwage/changelog-generator ^1.4.0 -> satisfiable by jwage/changelog-generator[1.4.0]. - jwage/changelog-generator 1.4.0 requires symfony/console ^5.0.0 || ^6.1.2 -> found symfony/console[v5.0.0, ..., v5.4.32, v6.1.2, ..., v6.4.0] but it conflicts with your root composer.json require (^7.0.0). Problem 2 - Root composer.json requires phly/keep-a-changelog ^2.12.1 -> satisfiable by phly/keep-a-changelog[2.12.1]. - phly/keep-a-changelog 2.12.1 requires symfony/console ^5.2.1 || ^6.0 -> found symfony/console[v5.2.1, ..., v5.4.32, v6.0.0, ..., v6.4.0] but it conflicts with your root composer.json require (^7.0.0). Problem 3 - roave/infection-static-analysis-plugin[1.32.0, ..., 1.33.0] require infection/infection 0.27.0 -> satisfiable by infection/infection[0.27.0]. - infection/infection 0.27.0 requires symfony/console ^5.4 || ^6.0 -> found symfony/console[v5.4.0, ..., v5.4.32, v6.0.0, ..., v6.4.0] but it conflicts with your root composer.json require (^7.0.0). - Root composer.json requires roave/infection-static-analysis-plugin ^1.32.0 -> satisfiable by roave/infection-static-analysis-plugin[1.32.0, 1.33.0]. Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.