---
title: "Upgrade worker runtime"
method: POST
path: "/v1/workers/{id}/runtime/upgrade"
tags: ["Workers", "Worker Runtime"]
---

# Upgrade worker runtime

`POST /v1/workers/{id}/runtime/upgrade`

Forwards a runtime upgrade request to a specific worker and returns the worker runtime's response.

## Path parameters

- `id` string, typeid, required

## Request body

- object

## Response `200`

Worker runtime upgrade request completed successfully.

- WorkerRuntimeResponse

## Other responses

- `400` — The runtime upgrade request was invalid.
- `401` — The caller must be signed in to upgrade a worker runtime.
- `404` — The worker could not be found.

## Changes

- **2026-08-20** `93df40e2efd5` — 1 info
  - removed the pattern `^wrk_.*` from the `path` request parameter `id`

[Change history](https://skmtc.dev/openworklabs/apis/den-api/changes/v1/workers/:id/runtime/upgrade/post.md)

---

[API](https://skmtc.dev/openworklabs/apis/den-api.md) · [All operations](https://skmtc.dev/openworklabs/apis/den-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/openworklabs/den-api/revisions/fcbb34aa1702/schema)