# Changes to CSS Parser Algorithms

### 4.0.0

_January 14, 2026_

- Updated: Support for Node `20.19.0` or later (major).
- Removed: `commonjs` API. In supported Node versions `require(esm)` will work without needing to make code changes.
- Updated [`@csstools/css-tokenizer`](https://github.com/csstools/postcss-plugins/tree/main/packages/css-tokenizer) to [`4.0.0`](https://github.com/csstools/postcss-plugins/tree/main/packages/css-tokenizer/CHANGELOG.md#400) (major)

[Full CHANGELOG](https://github.com/csstools/postcss-plugins/tree/main/packages/css-parser-algorithms/CHANGELOG.md)