# Next.js v13.5.9 — Release & Upgrade Intelligence
- **Product:** Next.js (https://nextjs.org)
- **Version:** v13.5.9
- **Released:** Mar 22, 2025
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/nextjs/updates/v13.5.9/

## Executive Summary (TL;DR)
Next.js v13.5.9. Source highlight: This release is backporting bug fixes. It does **not** include all pending features/changes on canary.

## Bug Fixes
- [backport] middleware subrequest patch (#77418)

## Upgrade Command
```bash
npm install --save-exact next@13.5.9
```