> For the complete documentation index, see [llms.txt](https://docs.mobb.ai/mobb-user-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.mobb.ai/mobb-user-docs/more-info/update-broker-token/gitlab-server-oauth.md).

# GitLab Server — OAuth

{% hint style="warning" %}
This guide applies **only to on-premises Mobb deployments** where the [Mobb Broker](/mobb-user-docs/more-info/mobb-broker.md) is used to connect to a self-hosted GitLab Server instance.
{% endhint %}

## Overview

When Mobb connects to an on-premises GitLab Server through the Mobb Broker using **OAuth** authentication, it relies on an OAuth application and its associated credentials configured in GitLab Server. This guide explains how to update or rotate those OAuth credentials in Mobb.

## Prerequisites

* Access to a Mobb on-premises deployment with the Mobb Broker configured for GitLab Server
* Admin access to the GitLab Server instance to manage OAuth applications
* Admin or Owner access to the relevant Mobb organization

## Steps

### Step 1: Rotate or Obtain Updated OAuth Credentials

### Step 2: Update the OAuth Credentials in Mobb

### Step 3: Verify the Connection

## Verification