Your lock file does not contain a compatible set of packages. Please run composer update. Problem 1 - roave/infection-static-analysis-plugin is locked to version 1.35.0 and an update of this package was not requested. - roave/infection-static-analysis-plugin 1.35.0 requires php ~8.1.0 || ~8.2.0 || ~8.3.0 -> your php version (8.4.0-dev) does not satisfy that requirement. Problem 2 - vimeo/psalm is locked to version 5.24.0 and an update of this package was not requested. - vimeo/psalm 5.24.0 requires php ^7.4 || ~8.0.0 || ~8.1.0 || ~8.2.0 || ~8.3.0 -> your php version (8.4.0-dev) does not satisfy that requirement. Problem 3 - php-standard-library/psalm-plugin is locked to version 2.3.0 and an update of this package was not requested. - php-standard-library/psalm-plugin 2.3.0 requires vimeo/psalm >=5.16 -> satisfiable by vimeo/psalm[5.24.0]. - vimeo/psalm 5.24.0 requires php ^7.4 || ~8.0.0 || ~8.1.0 || ~8.2.0 || ~8.3.0 -> your php version (8.4.0-dev) does not satisfy that requirement.