**To change the certificate name for a custom domain name** The following ``update-domain-name`` example changes the certificate name for a custom domain. :: aws apigateway update-domain-name \ --domain-name api.domain.tld \ --patch-operations op='replace',path='/certificateArn',value='arn:aws:acm:us-west-2:111122223333:certificate/CERTEXAMPLE123EXAMPLE' Output:: { "domainName": "api.domain.tld", "distributionDomainName": "d123456789012.cloudfront.net", "certificateArn": "arn:aws:acm:us-west-2:111122223333:certificate/CERTEXAMPLE123EXAMPLE", "certificateUploadDate": 1462565487 } For more information, see `Set up Custom Domain Name for an API in API Gateway <https://docs.aws.amazon.com/apigateway/latest/developerguide/how-to-custom-domains.html>`_ in the *Amazon API Gateway Developer Guide*.