# What changed in stylelint-value-no-unknown-custom-properties

> 3 changes in stylelint-value-no-unknown-custom-properties 6 from its official release notes, upgrade guides and advisories: 1 new APIs and options. Each one cited. Sources checked 2026-10-21. HTML: https://unstale.sh/npm/stylelint-value-no-unknown-custom-properties/

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

## stylelint-value-no-unknown-custom-properties 6

### New APIs and options

- The plugin now supports custom messages. (6.1.0) — [release notes](https://github.com/csstools/stylelint-value-no-unknown-custom-properties/releases/tag/v6.1.0)

### Behavior and default changes

- The plugin now supports @property. (6.1.0) — [release notes](https://github.com/csstools/stylelint-value-no-unknown-custom-properties/releases/tag/v6.1.0)

### Fixes and other changes

- Fixes issues being reported repeatedly. (6.1.0) — [release notes](https://github.com/csstools/stylelint-value-no-unknown-custom-properties/releases/tag/v6.1.0)