If the newer version of LambStatus is available, you can update the existing CloudFormation stack by following the steps below.
https://s3-ap-northeast-1.amazonaws.com/lambstatus/cf-template/0.6.6/lamb-status.yml
). Then, click the 'Next' button.
Click the 'Next' button 2 times.
Check the acknowledgment checkbox at the bottom and click the 'Update' button.