---
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/