diff --git a/Casks/omnigraffle5.rb b/Casks/omnigraffle5.rb
index 7bed24bc0..2f35cd534 100644
--- a/Casks/omnigraffle5.rb
+++ b/Casks/omnigraffle5.rb
@@ -2,7 +2,7 @@ cask 'omnigraffle5' do
   version '5.4.4'
   sha256 '7bcc64093f46bd4808b1a4cb86cf90c0380a5c5ffffd55ce8f742712818558df'
 
-  url "http://www.omnigroup.com/ftp1/pub/software/MacOSX/10.6/OmniGraffle-#{version}.dmg"
+  url "https://downloads.omnigroup.com/software/MacOSX/10.6/OmniGraffle-#{version}.dmg"
   name 'OmniGraffle 5'
   homepage 'https://www.omnigroup.com/omnigraffle/'