# Astro astro@5.15.4 — Release & Upgrade Intelligence
- **Product:** Astro (https://astro.build)
- **Version:** astro@5.15.4
- **Released:** Nov 06, 2025
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/astro/updates/astro-5.15.4/

## Executive Summary (TL;DR)
Astro astro@5.15.4. Source highlight: Adds missing documentation for some public utilities exported from `astro:i18n`.

## Bug Fixes
- Adds missing documentation for some public utilities exported from `astro:i18n`.
- Adds support for client hydration in `getContainerRenderer()`
- Fixes typos in documenting our error messages and public APIs.
- Fixes a case where the experimental Fonts API would filter available font files too aggressively, which could prevent the download of woff files when using the google provider

## Upgrade Command
```bash
npm install --save-exact astro@5.15.4
```