# Update a topic using the AWS CLI
<a name="update-topic-cli"></a>

Run the following command, replacing *ClusterArn* with the Amazon Resource Name (ARN) of your cluster and *TopicName* with the name of the topic you want to update.

```
aws kafka update-topic --cluster-arn ClusterArn --topic-name TopicName --partition-count 6
```

The output of this command looks like the following JSON example.

```
{
    "topicArn": "arn:aws:kafka:us-east-1:123456789012:topic/MyCluster/abcd1234-abcd-dcba-4321-a1b2abcd9f9f-2/MyTopic",
    "topicName": "MyTopic",
    "status": "UPDATING"
}
```