> For the complete documentation index, see [llms.txt](https://docs.appfarm.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.appfarm.io/library/action-nodes/update-secret.md).

# Update secret

The Update secret action node saves a new value in a [secret](/reference/security/secrets.md). It is available in [services](/reference/services.md) and [flows](/reference/flows.md).

## Usage

This action node is used to update a secret via a service or a flow. A common use case includes refreshing access tokens which are used for authorization in web requests to external APIs.

For a secret to be updated from a service or a flow it must be:

* Environment specific.
* Not locked.

In addition, the [user](/reference/security/users.md) or [service account](/reference/security/service-accounts.md) that runs the service containing this action node must have a role that has been granted the [permission](/reference/security/permissions.md) **Update Secret from Service** > `SECRET_NAME`.

### Example

For a walkthrough of creating a service to update a secret, see [How to update an OAuth 2.0 access token from a service](/how-to/workflow-automation/update-an-oauth-2.0-access-token-from-a-service.md).

## Properties

<table><thead><tr><th width="196">Property</th><th>Description</th></tr></thead><tbody><tr><td><strong>Secret</strong></td><td>Select a secret to update. The secret must be environment specific and not locked. The user or service account triggering the service must have permission to update this secret.</td></tr><tr><td><strong>Value</strong></td><td>Bind a value to set. The value will be set for the environment that the service is run in.</td></tr></tbody></table>


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