> For the complete documentation index, see [llms.txt](https://documentation.hak5.org/cloud-c2/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://documentation.hak5.org/cloud-c2/guides/installing-updates-to-the-cloud-c-server.md).

# Installing updates to the Cloud C² Server

From time to time new versions of Cloud C² are released, and when published your server will check for over-the-air updates at login or server start. When available, these updates may be installed quickly and easily. For Linux and MacOS deployments, upgrades are automatic. 

{% hint style="info" %}
For Windows deployments, a new binary must be downloaded, replacing the existing.
{% endhint %}

You may notice at server start:

```
[*] Initializing Hak5 Cloud C2 v3.0.1
[*] Hostname: example.com
[*] DB Path: c2.db
[*] Validating License
[*] License Valid
[*] Running Hak5 Cloud C2
[!] New C2 Server Update Available
```

Or upon login:

![](/files/dRF3U3NfJ9KJp9PL9zJ8)

To apply the update, click the Update button.

The console will report the following information:

```
[!] Overseer update in progress, restarting
[*] Shutting down gracefully
[*] Server stopped
[*] Initializing Hak5 Cloud C2 v3.0.2
[*] Hostname: example.com
[*] DB Path: c2.db
[*] Validating License
[*] License Valid
[*] Running Hak5 Cloud C2
```

The web session will logout, and upon login you will be greeted with the new version.