[chef] Possible to subscribe to Deploy Resource?

[Ruby Newbie < >]

Hello, all.

I am using Chef's "deploy_revision" Resource to deploy my application. I also 
have some "runit_service" Resources that need to be restarted each time my 
application deploys:

============================
  deploy_revision "/app/myapp" do
      repo 
"
 :mycompany/myapp.git"
      ...
  end

  runit_service "worker_process" do
    ...
    supports :restart => true
    subscribes :restart, resources(:deploy_revision => "/app/myapp"), 
:immediate
  end
============================

Why does the above "subscribes" method not cause the service to restart when 
the deploy_revision service fires, even when  force_deploy = true? Is there a 
way to accomplish this with Chef 0.8.16?

Thanks,
- RN