---
schema_version: "1"
id: d842df8c597f24ea5e1837a4a6ce177619e741a05d32e254cf7f05b6693d03da
title: Upgrade SSO Claim Version
collection: developer
version: current
locale: en-us
portal_url: https://docs.salesforce.com/developer/current/en-us/marketing-cloud/guides/mc-app-development/upgrade-sso.md
canonical_url: https://developer.salesforce.com/docs/marketing/marketing-cloud/guide/upgrade-sso.html
source_site: developer.salesforce.com
content_type: documentation
content_hash: 96071611c7f92e523578f667ee28085c52af184f1a5666246c1df9dc40a648d9
products:
  - Marketing Cloud Engagement APIs and Programmatic Languages
  - Marketing Cloud
---
# Upgrade SSO Claim Version

The app SSO process uses a JSON Web Token (JWT) to acquire access tokens on behalf of logged-in users.

SSO Claim version 2 provides greater security for your apps because it does not include the access token in the initial request. Apps that use the SSO Claim version 1 should consider upgrading to version 2. When you upgrade versions, update your app so that it no longer sends an access token in its initial request. Use the following example JSON as a guide to update your app to support SSO Claim version 2.

## Decoded JWT before and after Upgrade

![Upgrade SSO Claim Version to v2](https://developer.salesforce.com/docs/media/images/sso_upgrade_v2.png)

## Related Items

- [Single Sign-On](https://developer.salesforce.com/docs/marketing/marketing-cloud/guide/single-sign-on.md)
- [Explanation of Decoded JWT](https://developer.salesforce.com/docs/marketing/marketing-cloud/guide/explanation-decoded-jwt.md)