Specific versions of Consul may have additional information about the upgrade
process beyond the standard flow.
---
# Upgrading to 1.8.4
# Upgrading to 1.8.10
## Introduction
This guide explains how to best upgrade a multi-datacenter Consul deployment that is using
a version of Consul >= 1.6.9 and < 1.8.4 while maintaining replication. If you are on a version
a version of Consul >= 1.6.9 and < 1.8.10 while maintaining replication. If you are on a version
older than 1.6.9, please follow the link for the version you are on from [here](/docs/upgrading/instructions).
In this guide, we will be using an example with two datacenters (DCs) and will be
@ -19,7 +19,7 @@ referring to them as DC1 and DC2. DC1 will be the primary datacenter.
## Requirements
- All Consul servers should be on a version of Consul >= 1.6.9 and < 1.8.4.
- All Consul servers should be on a version of Consul >= 1.6.9 and < 1.8.10.
## Assumptions
@ -87,7 +87,7 @@ You should receive output similar to this:
}
```
**3.** Upgrade the Consul agents in all DCs to version 1.8.4 by following our [General Upgrade Process](/docs/upgrading/instructions/general-process).
**3.** Upgrade the Consul agents in all DCs to version 1.8.10 by following our [General Upgrade Process](/docs/upgrading/instructions/general-process).
**4.** Confirm that replication is still working in DC2 by issuing the following curl command from a