# What changed in postcss-rtlcss

> 1 change in postcss-rtlcss 6 from its official release notes, upgrade guides and advisories: 1 breaking. Each one cited. Sources checked 2026-10-20. HTML: https://unstale.sh/npm/postcss-rtlcss/

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

## postcss-rtlcss 6

### Breaking changes

- The library target changes from es5 to es6, altering the transpilation of the plugin bundle and potentially affecting compatibility with older environments. (6.0.0) — [release notes](https://github.com/elchininet/postcss-rtlcss/releases/tag/v6.0.0)