```ruby
class Reeder < Cask
  url 'http://reederapp.com/beta-reeder-for-mac/Reeder2.0b2.zip'
  homepage 'http://reederapp.com/mac/'
  version '2.0b2'
  sha256 '67491dcfa999e753c1f220a4f1216f15e14bea32af7e5a9c31499ccf082a1e66'
  link 'Reeder.app'
end
```

Update Reeder to beta 5
user
```ruby
class Reeder < Cask
  url 'http://reederapp.com/beta-reeder-for-mac/Reeder2.0b5.zip'
  homepage 'http://reederapp.com/mac/'
  version '2.0b5'
  sha256 '3841689b9642bcd94268964d6afa43d364eb1795ba1292f4816e21b343eb499c'
  link 'Reeder.app'
end
```
assistant