diff --git a/Casks/vivaldi-snapshot.rb b/Casks/vivaldi-snapshot.rb
index 1b61b5502..1ec223362 100644
--- a/Casks/vivaldi-snapshot.rb
+++ b/Casks/vivaldi-snapshot.rb
@@ -3,6 +3,8 @@ cask :v1 => 'vivaldi-snapshot' do
   sha256 'c4376383b7e508fe4ba56d28688360b767f1ef5885cf1faf0a9cb47ad986ce13'
 
   url "https://vivaldi.com/download/snapshot/Vivaldi.#{version}.dmg"
+  appcast 'https://update.vivaldi.com/update/1.0/mac/appcast.xml',
+          :sha256 => '0c00cc20a3350eb3d42e4a5f02d4b0a1906b735937bec5fd2a5639a9e58607bf'
   name 'Vivaldi'
   homepage 'https://vivaldi.com'
   license :gratis