composer update error

[void1995]

No composer.lock file present. Updating dependencies to latest instead of installing from lock file. Your requirements could not be resolved to an installable set of packages.

phpunit/phpunit[5.7.0, ..., 5.7.27] require php ^5.6 || ^7.0 -> your php version (8.3.3) does not satisfy that requirement. Root composer.json requires phpunit/phpunit 5.7.* -> satisfiable by phpunit/phpunit[5.7.0, ..., 5.7.27].