Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires nettrine/annotations ^0.9.0 -> satisfiable by nettrine/annotations[0.9.x-dev (alias of dev-master)]. - Root composer.json requires nettrine/fixtures ^0.8.0 -> satisfiable by nettrine/fixtures[0.8.x-dev (alias of dev-master)]. - doctrine/annotations[v1.5.0, ..., 1.10.2] require php ^7.1 -> your php version (8.2.27) does not satisfy that requirement. - doctrine/annotations[1.10.3, ..., 1.13.x-dev] require doctrine/lexer 1.* -> satisfiable by doctrine/lexer[v1.0, ..., 1.3.x-dev]. - doctrine/annotations[1.14.0, ..., 1.14.x-dev] require doctrine/lexer ^1 || ^2 -> satisfiable by doctrine/lexer[v1.0, ..., 1.3.x-dev, 2.0.0, ..., 2.1.x-dev]. - doctrine/lexer[1.1.0, ..., 1.2.0] require php ^7.2 -> your php version (8.2.27) does not satisfy that requirement. - nettrine/annotations dev-master requires doctrine/annotations ^1.6.1 -> satisfiable by doctrine/annotations[v1.6.1, ..., 1.14.x-dev]. - Conclusion: install doctrine/lexer 3.0.1 (conflict analysis result) - You can only install one version of a package, so only one of these can be installed: doctrine/lexer[v1.0, ..., 1.3.x-dev, 2.0.0, ..., 2.1.x-dev, 3.0.0, 3.0.1, 3.0.x-dev, 3.1.x-dev]. - nettrine/annotations 0.9.x-dev is an alias of nettrine/annotations dev-master and thus requires it to be installed too. Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.