```ruby
class Lyx < Cask
  url 'ftp://ftp.lyx.org/pub/lyx/bin/2.0.7/LyX-2.0.7+qt4.dmg'
  homepage 'http://www.lyx.org'
  version '2.0.7'
  sha1 '5c1b74645b20ffe85fc0a3c1d3aaf51ea8c9490f'
  link 'LyX.app'
end
```

Upgrade LyX to v2.0.7.1, Mac only bugfix release
user
```ruby
class Lyx < Cask
  url 'ftp://ftp.lyx.org/pub/lyx/bin/2.0.7.1/LyX-2.0.7.1+qt4-carbon.dmg'
  homepage 'http://www.lyx.org'
  version '2.0.7.1'
  sha1 '07f48e9b84e3bf15149ce9a0b54880dac0318f54'
  link 'LyX.app'
end
```
assistant