---
title: "Changes to Update milestone"
method: POST
path: "/sites/{site_id}/milestones/{milestone_id}"
---

# Changes to Update milestone

`POST /sites/{site_id}/milestones/{milestone_id}`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 1 of 4 revisions.

- **2026-08-10** `50679caad756`: 4 breaking, 4 info

## Changes

- **2026-08-10** `50679caad756`: 4 breaking, 4 info
  - added the new path request parameter `milestone_id`
  - added the new path request parameter `site_id`
  - the request property `milestone_date` became required
  - the request property `name` became required
  - api operation id `updateMilestone` was added
  - api tag `Milestones` added
  - added the non-success response with the status `400`
  - added the non-success response with the status `401`

---

[Operation](https://skmtc.dev/usefathom/apis/fathom-analytics-api/docs/sites/:site_id/milestones/:milestone_id/post.md) - [API](https://skmtc.dev/usefathom/apis/fathom-analytics-api.md) - [Page](https://skmtc.dev/usefathom/apis/fathom-analytics-api/changes/sites/:site_id/milestones/:milestone_id/post)