# rollup v4.63.1 - Product: rollup (https://whatsnew.fyi/product/rollup) - Vendor: rollup - Date: 2026-08-28 - Version: v4.63.1 - Original notes: https://github.com/rollup/rollup/releases/tag/v4.63.1 - Permalink: https://whatsnew.fyi/product/rollup/releases/v4.63.1 What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog. Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'. --- - **fixed** — Revert function return value tracking until the most recent issue is understood ##### 4.63.1 _2026-08-28_ ###### Bug Fixes - Revert function return value tracking until the most recent issue is understood (#6490) ###### Pull Requests - [#6489](https://github.com/rollup/rollup/pull/6489): fix(deps): update minor/patch updates (@renovate[bot]) - [#6490](https://github.com/rollup/rollup/pull/6490): Revert improve function return value tracking (@lukastaegert)