```ruby
class MiniMetro < Cask
  url 'http://static.dinopoloclub.com/minimetro/builds/alpha9/MiniMetro-alpha9d-osx.zip'
  homepage 'http://dinopoloclub.com/minimetro/'
  version 'Alpha 9d'
  sha256 '6ab2aa60fe4d65f347b2277ebb6ddb3712ef1efa30c8489cc559e5d9f817881b'
  link 'MiniMetro-alpha9d-osx.app', :target => 'Mini Metro.app'
end
```

Update mini metro to Aplha 9e
user
```ruby
class MiniMetro < Cask
  url 'http://static.dinopoloclub.com/minimetro/builds/alpha9/MiniMetro-alpha9e-osx.zip'
  homepage 'http://dinopoloclub.com/minimetro/'
  version 'Alpha 9e'
  sha256 'd2261a4e2ab6d71114af99524fa86c590b66f880c32c8546d556a2b80cc0be16'
  link 'MiniMetro-alpha9e-osx.app', :target => 'Mini Metro.app'
end
```
assistant