cask :v1 => 'firefox-esr' do version '31.6.0' sha256 '5adc5cb64ba7c02e2723adab242eac4603c85650273c4563223935a6efd6a343' url "https://download.mozilla.org/?product=firefox-#{version}esr-SSL&os=osx&lang=en-US" homepage 'https://www.mozilla.org/en-US/firefox/organizations/' license :mpl app 'Firefox.app' end