# Astro astro@5.9.0 — Release & Upgrade Intelligence
- **Product:** Astro (https://astro.build)
- **Version:** astro@5.9.0
- **Released:** Jun 05, 2025
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/astro/updates/astro-5.9.0/

## Executive Summary (TL;DR)
Astro astro@5.9.0. Source highlight: Adds experimental Content Security Policy (CSP) support

## New Features
- Adds experimental Content Security Policy (CSP) support
- Adds an option for integration authors to suppress adapter warning/errors in `supportedAstroFeatures`. This is useful when either an warning/error isn't applicable in a specific context or the default one might conflict and confuse users.

## Upgrade Command
```bash
npm install --save-exact astro@5.9.0
```