# Update Nuvlo's server software

Bring Nuvlo's management software on your servers up to the latest version, one server at a time, with health checks between servers.

## Before you start

- Servers with the status **Running**.
- Permission to manage servers in your Nuvlo account.

## Step 1: Open Server updates

On [Servers](https://app.nuvlo.dev/dashboard/servers), click **Manage updates**. To update a single server, open it, click the **Settings** tab and click **Check for updates** in the **Server software** row.

![The Server updates page with the Updates available, Already up to date and Needs attention sections](https://app.nuvlo.dev/docs/shots/server-updates--updates-page.webp)

## Step 2: Check which servers need the update

Click **Check for updates**. Nuvlo connects to each running server and reads its installed version. The page sorts servers into three groups:

- **Updates available**: servers behind the latest version shown at the top.
- **Already up to date**: servers on the latest version.
- **Needs attention**: servers that are offline or whose version couldn't be read. Click **Check version** to try a single server again.

**Legacy** in the **Installed** column means the server was set up before Nuvlo tracked versions. It can be updated like any other.

## Step 3: Select servers

Tick the servers to update, or click **Select all**. Tick **Reboot after updating** if you want each server restarted once its update passes the health checks.

## Step 4: Start the update

Click the update button in the header, which names the count and version, for example **Update 2 servers to Nuvlo** followed by the latest version number. The confirmation explains that servers update one at a time and must pass health checks before the next begins. Sites, databases, uploads and volumes are not touched. Click the button in the dialog to start.

## Step 5: Follow the progress

**Update progress** shows each server as **Queued**, **Checking**, **Updating**, **Rebooting**, **Verifying**, then **Updated**. Click **Logs** next to a server to see its update output.

If a server fails, the rollout stops: it shows **Failed** and the servers after it show **Skipped**. Open **Logs** to see why, fix the cause, and start the update again for the remaining servers.

## Good to know

- Only one rollout runs at a time per account.
- Servers that are paused because your account is over its plan can't be updated. See [Usage and limits](https://app.nuvlo.dev/docs/usage-and-limits).
- Updating Nuvlo's software doesn't change your sites' PHP or Node.js versions. Those are in [Runtimes](https://app.nuvlo.dev/docs/server-runtimes).

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Source: https://app.nuvlo.dev/docs/server-updates