---
title: Checkout UI Extensions - API Versioning - Shopify developer changelog
description: Shopify’s developer changelog documents all changes to Shopify’s platform. Find the latest news and learn about new platform opportunities.
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  html: https://shopify.dev/changelog/checkout-ui-extensions-api-versioning
  md: https://shopify.dev/changelog/checkout-ui-extensions-api-versioning.md
---

[Back to Developer changelog](https://shopify.dev/changelog)

July 27, 2023

Tags:

* API

# Checkout UI Extensions - API Versioning

We have released API versioning for checkout UI extensions. As part of this release, we are also moving checkout UI extensions over to the new ui extension packages.

* For information on how to adopt API versions for existing extensions, \[visit our versioning page] (<https://shopify.dev/docs/api/checkout-ui-extensions/unstable/versioning-migration>)
* For more details on the what and why, see [our post on github](https://github.com/Shopify/ui-extensions/discussions/1161)