How to blacklist network connections?

[Nakilon]

With Cuprite I did it like this:

Capybara.register_driver :cuprite do |app|
  Capybara::Cuprite::Driver.new app,
    url_blacklist: %w{ https://fonts.googleapis.com/css2?family=Roboto+Mono&display=swap },

How do I do it with Ferrum?

undefined method `blacklist' for #<Ferrum::Network:

UPD: oh I see it's in Unreleased.

[route]

I'm moving it from Cuprite to Ferrum, correct