diff --git a/LynxAstro.DewController.Setup/Config.wxi b/LynxAstro.DewController.Setup/Config.wxi
index 506f9c2..8b0bc4e 100644
--- a/LynxAstro.DewController.Setup/Config.wxi
+++ b/LynxAstro.DewController.Setup/Config.wxi
@@ -13,7 +13,7 @@
 
   <?define InstallName = "ASCOM LynxAstro.DewController" ?>
   <?define Manufacturer = "cjdawson.com" ?>
-  <?define UpgradeCode = "{57597bb6-f207-4998-97f4-8a041950d062}" ?>
+  <?define UpgradeCode = "{AAD4DF96-1AFB-4F80-97B5-34AA7B0FDB57}" ?>
   <?define INSTALLFOLDER = "$(var.InstallName)" ?>
   
   <?define LocalServerAppId = "{5EBBCD3B-3FC9-4D9F-868D-E0C2D085A58B}" ?>