# Vitest v4.0.1 — Release & Upgrade Intelligence
- **Product:** Vitest (https://vitest.dev)
- **Version:** v4.0.1
- **Released:** Oct 22, 2025
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/vitest/updates/v4.0.1/

## Executive Summary (TL;DR)
Vitest v4.0.1. Source highlight:    🐞 Bug Fixes

## Bug Fixes
- Move the `getBuiltins` check &nbsp;-&nbsp; by @sheremet-va in https://github.com/vitest-dev/vitest/issues/8765 <samp>(81000)</samp>
- **pool**: Don't teardown the communication channel too soon if something is running after the test &nbsp;-&nbsp; by @sheremet-va in https://github.com/vitest-dev/vitest/issues/8767 <samp>(3fae7)</samp>