```ruby
class NavicatPremium < Cask
  url 'http://download.navicat.com/download/navicat110_premium_en.dmg'
  homepage 'http://www.navicat.com/products/navicat-premium'
  version '11.0.14'
  sha1 '5c33766a606cda288964fc05bd485f0673da4614'
  link 'Navicat Premium.app'
end
```

Update Navicat Premium to 11.0.15
user
```ruby
class NavicatPremium < Cask
  url 'http://download.navicat.com/download/navicat110_premium_en.dmg'
  homepage 'http://www.navicat.com/products/navicat-premium'
  version '11.0.15'
  sha256 '15771c07291a1d06d965cbe742a7c4607b568052f1bbf830829f10bf8f447a22'
  link 'Navicat Premium.app'
end
```
assistant