# Updating the stream poller
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 The following information outlines the steps needed to update the stream poller with the latest Lambda artifacts using the AWS management console. 

## To update the stream poller with the latest Lambda artifacts
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You can update the stream poller with the latest Lambda code artifacts as follows:

1. In the AWS Management Console, navigate to CloudFormation and select the main parent CloudFormation stack.

1. Select the **Update** option for the stack.

1. Select **Replace current template**.

1. For the template source, choose **Amazon S3 URL** and enter the following S3 URL:

   ```
   https://aws-neptune-customer-samples.s3.amazonaws.com/neptune-stream/neptune_to_elastic_search.json
   ```

1. Select **Next** without changing any CloudFormation parameters.

1. Choose **Update Stack**.

The stack will now update the Lambda artifacts with the most recent ones.

## Extending the stream poller to support custom fields
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The current stream poller can easily be extended to write custom code for handling custom fields, as is explained in detail in this blog post: [Capture graph changes using Neptune Streams](https://aws.amazon.com/blogs/database/capture-graph-changes-using-neptune-streams/).

**Note**  
When adding a custom field in OpenSearch, make sure to add the new field as an inner object of a predicate (see [Neptune Full-text search data model](full-text-search-model.md)).