---
title: "Updating Lacuna PSC on Linux"
description: "Updating an on-premises Lacuna PSC installation on Linux: stop the service, replace the files, restart it, and test the release candidate."
canonical: "https://docs.lacunasoftware.com/en-us/articles/psc/on-premises/linux/update"
locale: "en"
product: "PSC"
last_updated: "2026-07-14"
---

# Updating Lacuna PSC on Linux

To update your [on-premises installation](https://docs.lacunasoftware.com/en-us/articles/psc/on-premises) of [Lacuna PSC](https://docs.lacunasoftware.com/en-us/articles/psc), follow the steps below:

> **Info**
>
> These instructions assume you are logged in as **root**. If you are not, run `sudo su -` before continuing!

```sh
curl -O https://cdn.lacunasoftware.com/psc/psc-1.4.2.tar.gz
systemctl stop lacuna-psc
rm -fR /usr/share/lacuna-psc/*
tar xzf psc-1.4.2.tar.gz -C /usr/share/lacuna-psc
chmod -R a=,u+rwX,go+rX /usr/share/lacuna-psc
systemctl start lacuna-psc
```

## Testing the next version of Lacuna PSC

To test the upcoming version of Lacuna PSC, currently in Release Candidate state:

```sh
curl -O https://cdn.lacunasoftware.com/psc/psc-1.7.0-rc01.tar.gz
systemctl stop lacuna-psc
rm -fR /usr/share/lacuna-psc/*
tar xzf psc-1.7.0-rc01.tar.gz -C /usr/share/lacuna-psc
chmod -R a=,u+rwX,go+rX /usr/share/lacuna-psc
systemctl start lacuna-psc
```

> **Warning**
>
> Release Candidate versions are not production-ready and thus should only be installed on
> staging or test environments.

## See also

* [Setup on Linux](https://docs.lacunasoftware.com/en-us/articles/psc/on-premises/linux)
* [Troubleshooting](https://docs.lacunasoftware.com/en-us/articles/psc/on-premises/linux/troubleshoot)