```ruby
class FontPtSans < Cask
  url 'http://www.fontstock.com/public/PTSans.zip'
  homepage 'http://www.paratype.com/public/'
  version '2.004'
  sha1 '3e14c921c2c9eb524ad5680eff931d1d5cbca00a'
  font 'PTC55F.ttf'
  font 'PTC75F.ttf'
  font 'PTN57F.ttf'
  font 'PTN77F.ttf'
  font 'PTS55F.ttf'
  font 'PTS56F.ttf'
  font 'PTS75F.ttf'
  font 'PTS76F.ttf'
end
```

Update PT sans to sha256 checksums
user
```ruby
class FontPtSans < Cask
  url 'http://www.fontstock.com/public/PTSans.zip'
  homepage 'http://www.paratype.com/public/'
  version '2.004'
  sha256 'c70b683ab35d28cc65367f6b9ef5f04d6d83b1217f2e727648bbaeb12dc140e7'
  font 'PTC55F.ttf'
  font 'PTC75F.ttf'
  font 'PTN57F.ttf'
  font 'PTN77F.ttf'
  font 'PTS55F.ttf'
  font 'PTS56F.ttf'
  font 'PTS75F.ttf'
  font 'PTS76F.ttf'
end
```
assistant