---
title: Elastic Common Schema (ECS) release notes
description: Review the changes, fixes, and more in each version of ECS. To check for security updates, go to Security announcements for the Elastic stack. Added details...
url: https://www.elastic.co/elastic/docs-builder/docs/3016/release-notes/ecs
products:
  - Elastic Common Schema (ECS)
---

# Elastic Common Schema (ECS) release notes
Review the changes, fixes, and more in each version of ECS.
To check for security updates, go to [Security announcements for the Elastic stack](https://discuss.elastic.co/c/announcements/security-announcements/31).

## 9.3.0


### Features and enhancements

- Added details for implementation of url.query to avoid ambiguity [#2488](https://github.com/elastic/ecs/pull/2488)
- Added `cloud` and `orchestrator` as allowed values for `entity.type`. [#2567](https://github.com/elastic/ecs/pull/2567)
- Allow entity fields at root level. [#2567](https://github.com/elastic/ecs/pull/2567)
- Added `entity.target` for self-nesting. [#2567](https://github.com/elastic/ecs/pull/2567)
- Added the target field to be nested under host [#2571](https://github.com/elastic/ecs/pull/2571)


## 9.2.0


### Features and enhancements

- Add `device` value to `event.type` [#2524](https://github.com/elastic/ecs/pull/2524)
- Add new `device` fields [#2530](https://github.com/elastic/ecs/pull/2530)
- Added `entity` fieldset as beta [#2537](https://github.com/elastic/ecs/pull/2537)


## 9.1.0


### Features and enhancements

- Add `gen_ai` fields to schema as beta. [#2475](https://github.com/elastic/ecs/pull/2475)
- Allow Unicode characters in generated ECS yml files. [#2478](https://github.com/elastic/ecs/pull/2478)
- Update semconv version used in file generation to v1.34.0 [#2483](https://github.com/elastic/ecs/pull/2483)


### Fixes

- Add `origin_referrer_url` and `origin_url` fields, which indicate the origin information to the file, process and dll schemas [#2441](https://github.com/elastic/ecs/pull/2441)
- Add `thumbprint_sha256` to `code_signature` schema. [#2452](https://github.com/elastic/ecs/pull/2452)
- Fix otel urls for fieldsets with underscores. [#2486](https://github.com/elastic/ecs/pull/2486)


## 9.0.0


### Features and enhancements

- Define base encoding of `x509.serial_number`. [#2383](https://github.com/elastic/ecs/pull/2383)
- Restrict the encoding of `x509.serial_number` to base 16. [#2398](https://github.com/elastic/ecs/pull/2398)
- Promote beta fields to GA. [#2411](https://github.com/elastic/ecs/pull/2411)
- Add mapping between ECS and OpenTelemetry. [#2415](https://github.com/elastic/ecs/pull/2415)
- Set synthetic_source_keep = none on fields that represent sets. [#2422](https://github.com/elastic/ecs/pull/2422)
- Increase ignore_above value for url.query. [#2424](https://github.com/elastic/ecs/pull/2424)
- Add `origin_referrer_url` and `origin_url` fields, which indicate the origin information to the file, process and dll schemas. [#2441](https://github.com/elastic/ecs/pull/2441)


### Fixes

- Fix link rendering issues and usage of http in links. [#2423](https://github.com/elastic/ecs/pull/2423)
- Fix link rendering for additional fields. [#2458](https://github.com/elastic/ecs/pull/2458)