If you have a lerna project you might realize that running lerna publish will sync up your packages versions.

If you do not want your packages to be synced up, you can initialize your project with the --independent flag. But if you already have a project, and need to edit it so that you use independent versions henceforth then you can edit your lerna.json file so that it looks like this:

{
  "lerna": "X.0.0",
  "packages": ["packages/*"],
  "version": "independent"
}

Adding the "version": "independent" entry will make it so that lerna publish works separately for your packages, regardless of whether they were tied together or not previously.