```ruby
class OperaNext < Cask
  url 'http://get.geo.opera.com/pub/opera-next/18.0.1284.26/mac/Opera_Next_18.0.1284.26_Setup.dmg'
  homepage 'http://www.opera.com/computer/next'
  version '18.0.1284.26'
  sha1 'e61e4e0960a2cb54dd9736b21720eea2b119af46'
  link 'Opera Next.app'
end
```

Update Opera Next to 18.0.1284.26
user
```ruby
class OperaNext < Cask
  url 'http://get.geo.opera.com/pub/opera-next/20.0.1387.59/mac/Opera_Next_20.0.1387.59_Setup.dmg'
  homepage 'http://www.opera.com/computer/next'
  version '20.0.1387.59'
  sha256 '9052e043eecfa9b85aafd0cf6c5881994ca08bf034b2967765b9c56e6d8affd3'
  link 'Opera Next.app'
end
```
assistant