Using Spring Boot, how do I see debug info for Zuul?

To log request and responses in Spring application I successfully use property:

logging:
  level:
    org:
      apache:
        http:
          wire: debug

Spencer's answer didn't work for me with current Zuul version (Spring Cloud Starter Zuul 1.4.6.RELEASE). What did work, instead, was adding the following logging property to application.yml

logging:
  level:
    org:
      springframework:
        cloud:
          netflix: trace

Set the property zuul.debug.request=true.