# Upgrading

Core API v2 is the current version of the API. **v1 stops being served at 00:00 UTC on 4 November 2026.** If your integration calls `/v1` routes or unprefixed routes such as `GET /payments`, or uses a Checkout SDK version earlier than `1.12.0`, upgrade before then.

* [Upgrading from v1 to v2](https://docs.odus.com/docs/guides/upgrading/v1-to-v2.md) — what v2 gives you, and the steps to move your integration. Required before 4 November 2026.
* [Upgrading webhooks to payload version 2](https://docs.odus.com/docs/guides/upgrading/webhook-payload-v2.md) — webhook bodies that show each resource at the moment of the event. Optional, with no deadline.