diff --git a/Casks/omnigraffle5.rb b/Casks/omnigraffle5.rb
deleted file mode 100644
index 02ab6f656..000000000
--- a/Casks/omnigraffle5.rb
+++ /dev/null
@@ -1,10 +0,0 @@
-cask 'omnigraffle5' do
-  version '5.4.4'
-  sha256 '7bcc64093f46bd4808b1a4cb86cf90c0380a5c5ffffd55ce8f742712818558df'
-
-  url "http://www.omnigroup.com/ftp/pub/software/MacOSX/10.6/OmniGraffle-#{version}.dmg"
-  homepage 'https://www.omnigroup.com/products/omnigraffle'
-  license :closed
-
-  app 'OmniGraffle 5.app'
-end