diff --git a/Casks/royal-tsx.rb b/Casks/royal-tsx.rb
index ed50ccc38ec..fe0c38fee25 100644
--- a/Casks/royal-tsx.rb
+++ b/Casks/royal-tsx.rb
@@ -2,7 +2,7 @@ class RoyalTsx < Cask
   version '1.3.0.0'
   sha256 '2306ae0579b097ccf4796f9cc08012819d3e55d5025a1424c8eca5330cdaedf5'
 
-  url 'http://app.royaltsx.com/updates/royaltsx_1.3.0.0.dmg'
+  url "http://app.royaltsx.com/updates/royaltsx_#{version}.dmg"
   appcast 'http://app.royaltsx.com/updates_stable.php'
   homepage 'http://www.royaltsx.com'