9.0.0 (2025-09-23)

Bug Fixes

• publish: ensure README file names are populated on package.json (#4211) (362875d)

Features

• support OIDC trusted publishing (d51e344)

OIDC trusted publishing is now supported by Lerna with no specification configuration required.

• A new guide has been added: https://lerna.js.org/docs/recipes/oidc-trusted-publishing
• A fully working example repo has been set up here https://github.com/JamesHenry/lerna-v9-oidc-publishing-example

BREAKING CHANGES

After updating we strongly recommend running lerna repair in your project. This will migrate your lerna.json to the latest and greatest and remove any outdated options.

As this is a major release there are a few breaking changes to be aware of, which may or may not affect your lerna repos, depending on how you are using the tool.

• node v18 support is dropped because it is end of life

When a node version becomes end of life (EOL) it means that it does not receive any updates or maintenance whatsoever, even if critical security vulnerabilities have been uncovered.

We strongly encourage all folks here to keep up with the maintenance LTS version of Node at an absolute minimum:

https://github.com/nodejs/release#release-schedule

The versions of node supported by lerna are now ^20.19.0 || ^22.12.0 || >=24.0.0.

• The @lerna/legacy-package-management package has been formally removed after 2 years of deprecation.

If you are still using lerna add, lerna bootstrap or lerna link commands, please migrate to using your package manager's long-supported workspaces feature. The updated guide should help with this https://lerna.js.org/docs/legacy-package-management**