# Astro astro@6.3.5 — Release & Upgrade Intelligence
- **Product:** Astro (https://astro.build)
- **Version:** astro@6.3.5
- **Released:** May 18, 2026
- **Impact Score:** 7/10
- **Breaking Changes:** Source flagged
- **Canonical Analysis:** https://changelogs.us/astro/updates/astro-6.3.5/

## Executive Summary (TL;DR)
Astro astro@6.3.5. Source highlight: Fixes `position` prop on `<Image>` and `` components breaking Content Security Policy (CSP).

## Breaking Changes & Deprecations
- -   [#16771](https://github.com/withastro/astro/pull/16771) [`07c8805`](https://github.com/withastro/astro/commit/07c880500926e3337798ca906d9422c880c6e148) Thanks [@ematipico](https://github.com/ematipico)! - Fixes `position` prop on `<Image>` and `` components breaking Content Security Policy (CSP).

## Bug Fixes
- Fixes `position` prop on `<Image>` and `` components breaking Content Security Policy (CSP).
- Improves error messages with more consistent and correct writing.
- Fixes dev server serving stale content when SSR-only modules change (e.g. `.astro` files outside the project root in a monorepo, or dynamically imported components).

## Upgrade Command
```bash
npm install --save-exact astro@6.3.5
```