# Astro astro@6.1.5 — Release & Upgrade Intelligence
- **Product:** Astro (https://astro.build)
- **Version:** astro@6.1.5
- **Released:** Apr 08, 2026
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/astro/updates/astro-6.1.5/

## Executive Summary (TL;DR)
Astro astro@6.1.5. Source highlight: Fixes a build error that occurred when a pre-rendered page used the `` component and another page called `render()` on content collection entries.

## Bug Fixes
- Fixes a build error that occurred when a pre-rendered page used the `` component and another page called `render()` on content collection entries.
- Fixes sync content inside `<Fragment>` not streaming to the browser until all async sibling expressions have resolved.
- Revives UnoCSS in dev mode when used with the client router.
- Uses today’s date for Cloudflare `compatibility_date` in `astro add cloudflare`
- Removed `dlv` dependency

## Upgrade Command
```bash
npm install --save-exact astro@6.1.5
```