# Docusaurus 3.9

DevFeed: [Docusaurus 3.9](<https://devfeed.tech/articles/docusaurus-3-9-40950.md>)

Original publisher: [Read original article](<https://docusaurus.io/blog/releases/3.9>)

Author: Sébastien Lorber

Published: 2025-09-25T00:00:00Z

Content type: release

Language: en

Sources: [Docusaurus Blog](<https://devfeed.tech/sources/docusaurus-blog.md>)

Topics: [releases](<https://devfeed.tech/topics/releases.md>), [Node.js](<https://devfeed.tech/topics/node-js.md>), [Algolia](<https://devfeed.tech/topics/algolia.md>), [Artificial Intelligence](<https://devfeed.tech/topics/ai.md>), [Internationalization (i18n)](<https://devfeed.tech/topics/i18n.md>), [layout](<https://devfeed.tech/topics/layout.md>)

Tags: [ai](<https://devfeed.tech/tags/ai.md>), [algolia](<https://devfeed.tech/tags/algolia.md>), [bug-fixes](<https://devfeed.tech/tags/bug-fixes.md>), [i18n](<https://devfeed.tech/tags/i18n.md>), [layout](<https://devfeed.tech/tags/layout.md>), [node-js](<https://devfeed.tech/tags/node-js.md>), [release](<https://devfeed.tech/tags/release.md>), [releases](<https://devfeed.tech/tags/releases.md>), [upgrade](<https://devfeed.tech/tags/upgrade.md>)

## AI overview

Docusaurus 3.9 drops support for Node.js 18, raising the minimum required version to Node.js 20. It adds Algolia DocSearch v4 with AskAI, improves internationalization support, adds Mermaid ELK layout support, and includes other improvements and bug fixes.

## Source excerpt

We are happy to announce Docusaurus 3.9.