---
title: Upgrading to 2026-01
description: |
  As of `2025-10`, customer account UI extensions use [Polaris web components](./polaris-web-components). If you are upgrading from a version earlier than `2025-10`, this guide describes how to upgrade your customer account UI extension to the latest version and adopt Polaris web components.
api_version: 2026-04
api_name: customer-account-ui-extensions
source_url:
  html: https://shopify.dev/docs/api/customer-account-ui-extensions/latest/upgrading-to-2026-01
  md: https://shopify.dev/docs/api/customer-account-ui-extensions/latest/upgrading-to-2026-01.md
---

Upgrading to 2026-01

Not supported in this version.