# Step 2: Update your Amazon ECS application
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 In this section, you update your Amazon ECS application to use a new revision of its task definition. You create the new revision and add a minor update to it by adding a tag. 

**To update your task definition**

1. Open the Amazon ECS classic console at [https://console.aws.amazon.com/ecs/](https://console.aws.amazon.com/ecs/).

1.  In the navigation pane, choose **Task Definitions**. 

1.  Select the check box for the task definition used by your Amazon ECS service.

1.  Choose **Create new revision**. 

1.  Make a small update to the task definition by adding a tag. At the bottom of the page, in **Tags**, create a new tag by entering a new key and value pair. 

1.  Choose **Create**. You should see that your task definition's revision number has been incremented by one. 

1.  Choose the **JSON** tab. Make a note of the value for `taskDefinitionArn`. Its format is `arn:aws:ecs:aws-region: account-id:task-definition/task-definition-family: task-definition-revision`. This is the ARN of your updated task definition.