Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires roave/no-leaks ^1.5.0 -> satisfiable by roave/no-leaks[1.5.0]. - roave/no-leaks 1.5.0 requires phpunit/phpunit ^9.6.10 -> found phpunit/phpunit[9.6.10, 9.6.11, 9.6.12, 9.6.13] but it conflicts with your root composer.json require (^10.4.2). Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.