deadLetterQueue = aws.sqs.Queue(
            f"{service_name}-dead-letter-queue",
        )
        redriveQueue = aws.sqs.Queue(
            f"{service_name}-retry-queue",
            redrive_policy=json.dumps({
                "deadLetterTargetArn": deadLetterQueue.arn,
                "maxReceiveCount": 4,
            })
        )

Doesn't look like this is working - the arn isn't serializable. Are there any higher level methods for attaching redrives?