When you publish a new version of your package on npmjs.com with
npm version, you can automatically push the version upgrade to your upstream repository as well - thanks to npm scripts!
Add a npm script
postversion: git push --follow-tags and you are good to go.
Whenever you made a
npm version major,
npm version minor, or
npm version patch, a new commit will be added to your upstream repository as well, mentioning this version upgrade.
Check this out - it has a freeCodeCamp blog link for a primer on npm scripts!