diff --git a/CHANGELOG.md b/CHANGELOG.md
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 * Add an entry point for stripes-core's service worker. Refs STRWEB-99.
 * Pass micro-stripes-config to service worker at build-time. Refs STRWEB-102.
+* Add postcss-plugin for relative color syntax support for Firefox. Refs STRWEB-103.
 
 ## [5.0.0](https://github.com/folio-org/stripes-webpack/tree/v5.0.0) (2023-10-11)
 [Full Changelog](https://github.com/folio-org/stripes-webpack/compare/v4.2.0...v5.0.0)