# Vitest v4.0.10 — Release & Upgrade Intelligence
- **Product:** Vitest (https://vitest.dev)
- **Version:** v4.0.10
- **Released:** Nov 17, 2025
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/vitest/updates/v4.0.10/

## Executive Summary (TL;DR)
Vitest v4.0.10. Source highlight:    🐞 Bug Fixes

## Bug Fixes
- Remove `onCancel` when worker is terminated &nbsp;-&nbsp; by @sheremet-va in https://github.com/vitest-dev/vitest/issues/9033 <samp>(6d7f0)</samp>
- Don't scale the iframe if UI is disabled &nbsp;-&nbsp; by @sheremet-va in https://github.com/vitest-dev/vitest/issues/9018 <samp>(5406e)</samp>
- Handle dependency stack traces with external source maps. Resolves: #9003 &nbsp;-&nbsp; by @iclectic in https://github.com/vitest-dev/vitest/issues/9016 and https://github.com/vitest-dev/vitest/issues/9003 <samp>(57ae5)</samp>
- Parsing of stack trace for bun runtime &nbsp;-&nbsp; by @nazarhussain in https://github.com/vitest-dev/vitest/issues/9032 <samp>(f3ec6)</samp>
- Prevent starting new run when cancelling &nbsp;-&nbsp; by @AriPerkkio in https://github.com/vitest-dev/vitest/issues/8991 <samp>(eb98d)</samp>
- Prevent writing to closed worker &nbsp;-&nbsp; by @AriPerkkio and @sheremet-va in https://github.com/vitest-dev/vitest/issues/9023 <samp>(042c6)</samp>