Using monolog loggly handler in Symfony

I'm trying to use the Monolog Loggly handler in Symfony2 but can't get it to work:

# config.yml
monolog:
    handlers:
        main:
            type:  stream
            token: my-loggly-token
            level: info
            handler: loggly
            tag: symfony-app

I've removed the monolog entries from config_dev.yml and config_prod.yml so the the setup above isn't being overridden. Inside a controller I'm trying to trigger an info event, but it's not appearing in Loggly. Where am I going wrong?

You should use type: loggly instead of stream.

# config.yml
monolog:
    handlers:
        main:
            type: loggly
            token: my-loggly-token
            level: info
            tag: symfony-app