# What changed in @rollup/plugin-babel

> 3 changes in @rollup/plugin-babel 6 to 7 from its official release notes, upgrade guides and advisories: 2 breaking. Each one cited. Sources checked 2026-10-27. HTML: https://unstale.sh/npm/@rollup/plugin-babel/

To see which of these apply to a repository, run `npx @unstale/cli init` in it.

## @rollup/plugin-babel 7

### Breaking changes

- Filtering capability and performance are improved; the release marks this as a breaking change. (7.0.0) — [release notes](https://github.com/rollup/plugins/blob/0abd95b3d8e027661777d646af4b7d0accaea7b7/packages/babel/CHANGELOG.md#v700)

### Performance

- Adds parallel processing via worker threads to Babel. (7.1.0) — [release notes](https://github.com/rollup/plugins/blob/0abd95b3d8e027661777d646af4b7d0accaea7b7/packages/babel/CHANGELOG.md#v710)

## @rollup/plugin-babel 6

### Breaking changes

- Prepared the plugin for Rollup 3. (6.0.0) — [release notes](https://github.com/rollup/plugins/blob/HEAD/packages/babel/CHANGELOG.md)