CodeIgniter 3 to 4 Upgrade Helper

I've released v0.1.0.
https://github.com/kenjis/ci3-to-4-upgra...r/releases

The official news tutorial works perfectly.
https://github.com/kenjis/ci3-to-4-news

I get an error that says:

"""
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Root composer.json requires kenjis/ci3-to-4-upgrade-helper 1.x-dev -> satisfiable by kenjis/ci3-to-4-upgrade-helper[1.x-dev].
    - kenjis/ci3-to-4-upgrade-helper 1.x-dev requires php ^7.3 -> your php version (8.0.10) does not satisfy that requirement.
"""

I think it may be resolved by adding this to composer.json file in ci3-to-4-upgrade-helper repository:

"php": "^7.3|^8.0",

Can you please check this error out and let me know?