# Changes to PostCSS Preset Env

### 11.6.0

_October 2, 2026_

- Added `@csstools/postcss-custom-functions` [Check the plugin README](https://github.com/csstools/postcss-plugins/tree/main/plugins/postcss-custom-functions#readme) for usage details.
- Updated [`@csstools/postcss-custom-functions`](https://github.com/csstools/postcss-plugins/tree/main/plugins/postcss-custom-functions) to [`1.0.1`](https://github.com/csstools/postcss-plugins/tree/main/plugins/postcss-custom-functions/CHANGELOG.md#101) (patch)

[Full CHANGELOG](https://github.com/csstools/postcss-plugins/tree/main/plugin-packs/postcss-preset-env/CHANGELOG.md)