diff --git a/Casks/mono-mdk-preview.rb b/Casks/mono-mdk-preview.rb
deleted file mode 100644
index b3e716c79..000000000
--- a/Casks/mono-mdk-preview.rb
+++ /dev/null
@@ -1,12 +0,0 @@
-cask 'mono-mdk-preview' do
-  version '4.8.0.371'
-  sha256 '2313fa4574e5f37c9c7fc6db0aaf0f2124ff37404571cf988b8c89cfbba06ddc'
-
-  url "https://download.mono-project.com/archive/#{version.sub(%r{\.[^.]*$}, '')}/macos-10-universal/MonoFramework-MDK-#{version}.macos10.xamarin.universal.pkg"
-  name 'Mono'
-  homepage 'http://www.mono-project.com/'
-
-  pkg "MonoFramework-MDK-#{version}.macos10.xamarin.universal.pkg"
-
-  uninstall pkgutil: 'com.xamarin.mono-*'
-end