```ruby
cask :v1 => 'ubar' do
  version '2.4.6'
  sha256 '7b65d412a6ebbb1fc22477176f40b431b482ce244870c6031be990fed8a788e3'

  url "http://www.brawersoftware.com/downloads/ubar/ubar#{version.gsub('.','')}.zip"
  appcast "http://brawersoftware.com/appcasts/feeds/ubar/ubar2.xml"
  name 'uBar'
  homepage 'http://brawersoftware.com/products/ubar'
  license :commercial

  app 'uBar.app'

  depends_on :macos => '>= :mavericks'
end
```

Update uBar.app to version 2.4.7
user
```ruby
cask :v1 => 'ubar' do
  version '2.4.7'
  sha256 '81089a544fa8d37d1632b120811156160b2fb513a20e4d139928341564b2f552'

  url "http://www.brawersoftware.com/downloads/ubar/ubar#{version.gsub('.','')}.zip"
  appcast "http://brawersoftware.com/appcasts/feeds/ubar/ubar2.xml"
  name 'uBar'
  homepage 'http://brawersoftware.com/products/ubar'
  license :commercial

  app 'uBar.app'

  depends_on :macos => '>= :mavericks'
end
```
assistant