# Vitest v4.0.8 — Release & Upgrade Intelligence
- **Product:** Vitest (https://vitest.dev)
- **Version:** v4.0.8
- **Released:** Nov 07, 2025
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/vitest/updates/v4.0.8/

## Executive Summary (TL;DR)
Vitest v4.0.8. Source highlight:    🐞 Bug Fixes

## Bug Fixes
- Workaround `noExternal` merging bug on Vite 6 &nbsp;-&nbsp; by @hi-ogawa in https://github.com/vitest-dev/vitest/issues/8950 <samp>(bcb13)</samp>
- Missed context.d.ts file &nbsp;-&nbsp; by @termorey in https://github.com/vitest-dev/vitest/issues/8965 <samp>(9044d)</samp>
- Incorrect error message for non-awaited `expect.element()` &nbsp;-&nbsp; by @StyleShit in https://github.com/vitest-dev/vitest/issues/8954 <samp>(9638d)</samp>
- **browser**: Cleanup frame-ancestors from CSP header at coverage middleware &nbsp;-&nbsp; by @userquin in https://github.com/vitest-dev/vitest/issues/8941 <samp>(1f730)</samp>
- **deps**: Update all non-major dependencies &nbsp;-&nbsp; by @sheremet-va in https://github.com/vitest-dev/vitest/issues/8636 <samp>(da8b9)</samp>
- **forks**: Do not fail with Windows Defender enabled &nbsp;-&nbsp; by @sheremet-va in https://github.com/vitest-dev/vitest/issues/8967 <samp>(c79f4)</samp>