You can update the ports in your yaml configuration file:

    http:
      port: 9000
      adminPort: 9001

If you've migrated to Dropwizard 0.7.0 you can use the following:

    server:
      applicationConnectors:
      - type: http 
        port: 9000
      adminConnectors:
      - type: http
        port: 9001

http://stackoverflow.com/questions/20028451/change-dropwizard-default-ports