> ## Documentation Index
> Fetch the complete documentation index at: https://www.voiceflow.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Update traffic split

> This endpoint still works, but its documentation has moved to Update traffic split on the REST API. Follow the link for the current reference.

<Note>
  **This endpoint still works.** Its documentation has moved.

  `PATCH /v1alpha1/project/{projectID}/environment/traffic` is not deprecated and continues to function. New
  integrations should use [Update traffic split](/docs/api-reference/environment/update-traffic-split) on the Voiceflow REST API,
  which is where this operation is documented now.
</Note>