# Astro astro@6.1.3 — Release & Upgrade Intelligence
- **Product:** Astro (https://astro.build)
- **Version:** astro@6.1.3
- **Released:** Apr 01, 2026
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/astro/updates/astro-6.1.3/

## Executive Summary (TL;DR)
Astro astro@6.1.3. Source highlight: Fixes a dev rendering issue with the Cloudflare adapter where head metadata could be missing and dev CSS/scripts could be injected in the wrong place

## Bug Fixes
- Fixes a dev rendering issue with the Cloudflare adapter where head metadata could be missing and dev CSS/scripts could be injected in the wrong place
- Fixes skew protection query parameters not being appended to inter-chunk JavaScript imports in client bundles, which could cause version mismatches during rolling deployments on Vercel
- Fixes an issue where HMR would not trigger when modifying files while using @astrojs/cloudflare with prerenderEnvironment: 'node' enabled.
- Fixes HTML content being incorrectly escaped as plain text when rendering a MDX component using the `AstroContainer` APIs.
- Fixes a bug where page-level CSS could leak between unrelated pages when traversing style parents across top-level route boundaries
- Fixes SSR builds failing with "No matching renderer found" when a project only has injected routes and no `src/pages/` directory

## Upgrade Command
```bash
npm install --save-exact astro@6.1.3
```