---
title: Add-on support for CMS 8
slug: cms-12/docs/add-on-support-for-cms-8
docTags: 
createdAt: 2026-08-10T15:55:57.000Z
---

Most add-ons are already working with Optimizely Content Management System (CMS 8). However, there are a few add-ons affected by the CMS 8 upgrade, that are currently being upgraded and tested for compatibility.

The following add-on is currently not compatible with Optimizely Content Management System (CMS 8):

- Semantix