# Vite v8.3.4 — Release & Upgrade Intelligence
- **Product:** Vite (https://vitejs.dev)
- **Version:** v8.3.4
- **Released:** Oct 08, 2026
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/vite/updates/v8.3.4/

## Executive Summary (TL;DR)
Vite v8.3.4. Source highlight: **bundled-dev:** support `import.meta.hot.acceptExports` (#23463) (bc0f21c)

## New Features
- **bundled-dev:** support `import.meta.hot.acceptExports` (#23463) (bc0f21c)

## Improvements
- **module-runner:** skip cloning call sites that have no source map (#23646) (3d67486)

## Bug Fixes
- avoid mutating hmr defaults (fix #23575) (#23576) (574d5e3)
- **build:** correct preloads when chunkImportMap is enabled with non-root base (#23698) (2a8c0f0)
- **build:** wait for in-flight stylesheets in preload helper (fix #23652) (#23662) (036b745)
- **bundled-dev:** serve `/@vite/client` and stub `@vite/env` (#23664) (5afc5a8)
- **client:** skip rewriting unchanged adopted styles (#23697) (fa71469)
- **css:** resolve imported preprocessors from their file path with lightningcss (#23688) (cf52011)

## Upgrade Command
```bash
npm install --save-dev --save-exact vite@8.3.4
```