diff --git a/Casks/omnidisksweeper.rb b/Casks/omnidisksweeper.rb
index 429a370ba16..800a312ea56 100644
--- a/Casks/omnidisksweeper.rb
+++ b/Casks/omnidisksweeper.rb
@@ -17,6 +17,7 @@ cask 'omnidisksweeper' do
     url "https://downloads.omnigroup.com/software/MacOSX/10.13/OmniDiskSweeper-#{version}.dmg"
   end
 
+  appcast 'https://update.omnigroup.com/appcast/com.omnigroup.OmniDiskSweeper'
   name 'OmniDiskSweeper'
   homepage 'https://www.omnigroup.com/more/'