```ruby
class XmarksSafari < Cask
  url 'https://static.xmarks.com/clients/safari/xmarks_for_safari_2.0.11.dmg'
  homepage 'http://www.xmarks.com/'
  version '2.0.11'
  sha256 '752d99a37a11b71be0af825c73f353335f7119792291d69f021a5bba1461ca6a'
  install 'Xmarks for Safari Installer.pkg'
end
```

Upgrade Xmarks for Safari to v2.0.13
user
```ruby
class XmarksSafari < Cask
  url 'https://static.xmarks.com/clients/safari/xmarks_for_safari_2.0.13.dmg'
  homepage 'http://www.xmarks.com/'
  version '2.0.13'
  sha256 '802666565765dd5d60b6aa6d61e073cea4fb4f59a899b105b6195e7525409775'
  install 'Xmarks for Safari Installer.pkg'
end
```
assistant