diff --git a/Casks/shimo.rb b/Casks/shimo.rb
index 8f3c3d7f269..74d7c7b8aa4 100644
--- a/Casks/shimo.rb
+++ b/Casks/shimo.rb
@@ -2,8 +2,8 @@ cask 'shimo' do
   version '5.0.2_8880'
   sha256 '09364783b6dcc13b1ef54feaf4c57d1518f25a6c6e3884c9ab6c2a6077942b2a'
 
-  # shimo.s3.amazonaws.com was verified as official when first introduced to the cask
-  url "https://shimo.s3.amazonaws.com/Shimo_#{version}.zip"
+  # downloads.mailbutler.io was verified as official when first introduced to the cask
+  url "https://downloads.mailbutler.io/Shimo_#{version}.zip"
   appcast "https://www.shimovpn.com/appcast#{version.major}.php"
   name 'Shimo'
   homepage 'https://www.shimovpn.com/'