```ruby
class AndroidStudio < Cask
  version '0.8.3 build-135.1281642'
  sha256 'fcc6a0b4817e83bc6251764637041e90db7c8df65e7a362e50b9083664cee0f9'

  url 'https://dl.google.com/dl/android/studio/ide-zips/0.8.3/android-studio-ide-135.1281642-mac.zip'
  homepage 'https://developer.android.com/sdk/installing/studio.html'

  link 'Android Studio.app'
end
```

Upgrade Android Studio.app to v0.8.4 build-135.1295215
user
```ruby
class AndroidStudio < Cask
  version '0.8.4 build-135.1295215'
  sha256 '595d0f24bc02e3be3ff3d2e4dc7c623d3bbf5a57fd26b48c3613e9292e8fc5ec'

  url 'https://dl.google.com/dl/android/studio/ide-zips/0.8.4/android-studio-ide-135.1295215-mac.zip'
  homepage 'https://developer.android.com/sdk/installing/studio.html'

  link 'Android Studio.app'
end
```
assistant