---
title: Upgrading etcd clusters and applications
---

This section contains documents specific to upgrading etcd clusters and applications.

## Moving from etcd API v2 to API v3
* [Migrate applications from using API v2 to API v3][migrate-apps]

## Upgrading an etcd v3.x cluster
* [Upgrade etcd from 3.0 to 3.1](upgrade_3_1)
* [Upgrade etcd from 3.1 to 3.2](upgrade_3_2)

## Upgrading from etcd v2.3
* [Upgrade a v2.3 cluster to v3.0](upgrade_3_0)


[migrate-apps]: ../op-guide/v2-migration