```ruby
class GurpsCharacterSheet < Cask
  url 'https://downloads.sourceforge.net/project/gcs-java/gcs-4.0.0-mac.zip'
  homepage 'http://gurpscharactersheet.com'
  version '4.0.0'
  sha256 '67ccecc44d28f8cf104094ae988779b8219f79a6e6fbe9c695828034d3307816'
  link 'gcs-4.0.0-mac/GURPS Character Sheet.app'
end
```

Update GURPS Character Sheet.app to v1.0.4
user
```ruby
class GurpsCharacterSheet < Cask
  version '4.0.1'
  sha256 'ddff9b883b29be7dce0798cfedfe48c54d02a2adb16dc1e60cbcaa37d2ef902e'

  url 'https://downloads.sourceforge.net/project/gcs-java/gcs-4.0.1-mac.zip'
  homepage 'http://gurpscharactersheet.com'

  link 'gcs-4.0.1-mac/GURPS Character Sheet.app'
end
```
assistant