# Modify the version of an Amazon Bedrock chat agent app
<a name="app-change-alias-version"></a>

You can change the version of a chat agent app that an agent node in a flow app uses, or the version of a chat agent app that is shared with other users. To change the version, you modify the alias for the chat agent app to reference the new version. After updating the alias, you don't need to update the flow app or shares of the chat agent app for them to use the new version. 

The following procedure shows you how to change the version of a chat agent app that an alias for the app references.



**To modify the version that an alias references**

1. Navigate to the Amazon SageMaker Unified Studio landing page by using the URL from your administrator.

1. Access Amazon SageMaker Unified Studio using your IAM or single sign-on (SSO) credentials. For more information, see [Access Amazon SageMaker Unified Studio](getting-started-access-the-portal.md).

1. From the project selector dropdown at the top of the page, choose the project that you want to use.

1. In the left navigation pane, under **Generative AI**, choose **AI apps**.

1. Open the app that you want to use.

1. Choose the selector on the **Deploy** button and select **View aliases**. The **View and manage aliases** pane opens.

1. For the alias that you want modify, choose **Edit**.

1. In the **Edit alias** pane, select the version that you want the alias to use in **Select version to associate with this alias**. 

1. (Optional) Update the name and description for the alias.

1. Choose **Save** to save your changes.