```ruby
class Openoffice < Cask
  url 'http://downloads.sourceforge.net/project/openofficeorg.mirror/4.0.1/binaries/en-US/Apache_OpenOffice_4.0.1_MacOS_x86_install_en-US.dmg'
  homepage 'http://www.openoffice.org/'
  version '4.0.1'
  sha256 'a6350066eb4a7cb35db8fda6d27c2f22534233465a95a9d4065e61fc717b7c5f'
  link 'OpenOffice.app'
end
```

Update OpenOffice to version 4.1
user
```ruby
class Openoffice < Cask
  url 'http://downloads.sourceforge.net/project/openofficeorg.mirror/4.1.0/binaries/en-US/Apache_OpenOffice_4.1.0_MacOS_x86-64_install_en-US.dmg'
  homepage 'http://www.openoffice.org/'
  version '4.1.0'
  sha256 'ac77ff69cbbd87523e019d3c68d839cba2f952b0b63c13fb948863c8f25eaa9a'
  link 'OpenOffice.app'
end
```
assistant