---
title: "Changes to Update an existing custom event property"
method: PATCH
path: "/events/2026-03/event-definitions/{eventName}/property/{propertyName}"
---

# Changes to Update an existing custom event property

`PATCH /events/2026-03/event-definitions/{eventName}/property/{propertyName}`

> Every recorded change to this operation, newest first.
> 14 revisions in range; 1 not diffed, 2 could not be searched.

## Timeline

Changed in 1 of 14 revisions.

- **2026-03-30** `dc2fdad57f7f`: 1 info

## Changes

- **2026-03-30** `dc2fdad57f7f`: 1 info
  - endpoint added

---

[Operation](https://skmtc.dev/hubspot/apis/hubspot-api-specification/docs/events/2026-03/event-definitions/:eventName/property/:propertyName/patch.md) - [API](https://skmtc.dev/hubspot/apis/hubspot-api-specification.md) - [Page](https://skmtc.dev/hubspot/apis/hubspot-api-specification/changes/events/2026-03/event-definitions/:eventName/property/:propertyName/patch)