n8n-docs/docs/license-key.md
2025-09-10 10:16:20 +01:00

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---
title: License key
description: How to activate your license key.
contentType: howto
---
# License Key
To enable certain licensed features, you must first activate your license. You can do this either through the UI or by setting environment variables.
## Add a license key using the UI
In your n8n instance:
1. Log in as **Admin** or **Owner**.
1. Select **Settings** > **Usage and plan**.
1. Select **Enter activation key**.
1. Paste in your license key.
1. Select **Activate**.
## Add a license key using an environment variables
In your n8n configuration, set `N8N_LICENSE_ACTIVATION_KEY` to your license key. If the instance already has an activated license, this variable will have no effect.
Refer to [Environment variables](/hosting/configuration/configuration-methods.md) to learn more about configuring n8n.
## Allowlist the license server IP addresses
n8n uses Cloudflare to host the license server. As the specific IP addresses can change, you need to allowlist the [full range of Cloudflare IP addresses](https://www.cloudflare.com/ips/) to ensure n8n can always reach the license server.