**To change the name of the Custom Authorizer** Command:: aws apigateway update-authorizer --rest-api-id 1234123412 --authorizer-id gfi4n3 --patch-operations op='replace',path='/name',value='testAuthorizer' Output:: { "authType": "custom", "name": "testAuthorizer", "authorizerUri": "arn:aws:apigateway:us-west-2:lambda:path/2015-03-31/functions/arn:aws:lambda:us-west-2:123412341234:function:customAuthorizer/invocations", "authorizerResultTtlInSeconds": 300, "identitySource": "method.request.header.Authorization", "type": "TOKEN", "id": "gfi4n3" } **To change the Lambda Function that is invoked by the Custom Authorizer** Command:: aws apigateway update-authorizer --rest-api-id 1234123412 --authorizer-id gfi4n3 --patch-operations op='replace',path='/authorizerUri',value='arn:aws:apigateway:us-west-2:lambda:path/2015-03-31/functions/arn:aws:lambda:us-west-2:123412341234:function:newAuthorizer/invocations' Output:: { "authType": "custom", "name": "testAuthorizer", "authorizerUri": "arn:aws:apigateway:us-west-2:lambda:path/2015-03-31/functions/arn:aws:lambda:us-west-2:123412341234:function:newAuthorizer/invocations", "authorizerResultTtlInSeconds": 300, "identitySource": "method.request.header.Authorization", "type": "TOKEN", "id": "gfi4n3" }