# 2025-12-17: Webhook Service - update category event schema

## Overview

Category event schemas were updated to include support for classification categories and their associated mixins.

## Added new fields

| Event                | Description                                                                     |
| -------------------- | ------------------------------------------------------------------------------- |
| `category.created`   | Support for `classificationMixins` added.                                       |
| `category.updated`   | Support for `classificationMixinsBefore` and `classificationMixinsAfter` added. |
| `assignment.created` | Support for `classificationMixins` added.                                       |

## Known problems

There are no known problems.

## Links

* [Events - Category Tree](/api-references/api-guides/webhooks/webhook-events/events-category.md)


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