---
title: Elasticsearch PHP Client breaking changes
description: Breaking changes can impact your Elastic applications, potentially disrupting normal operations. Before you upgrade, carefully review the Elasticsearch...
url: https://www.elastic.co/elastic/docs-builder/docs/3016/release-notes/elasticsearch/clients/php/breaking-changes
products:
  - Elasticsearch
  - Elasticsearch Client
  - Elasticsearch PHP Client
---

# Elasticsearch PHP Client breaking changes
Breaking changes can impact your Elastic applications, potentially disrupting normal operations. Before you upgrade, carefully review the Elasticsearch PHP Client breaking changes and take the necessary steps to mitigate any issues. To learn how to upgrade, check [Upgrade](https://docs-v3-preview.elastic.dev/elastic/docs-builder/docs/3016/deploy-manage/upgrade).

## 9.0.0

- **Use of PHP 8.1+:** Starting from 9.0.0 the `elasticsearch-php` client requires PHP 8.1+.