diff --git a/wix/main.wxs b/wix/main.wxs
index 040d7fa3..e2b706fe 100644
--- a/wix/main.wxs
+++ b/wix/main.wxs
@@ -8,7 +8,7 @@
 
 <Wix xmlns="http://schemas.microsoft.com/wix/2006/wi">
     <Product Id="*" Version="0.3.2" UpgradeCode="C19F9B41-CD13-4F0E-B27D-E0EF8CF1CE91" Language="1033" Name="Grim" Manufacturer="Ardocrat">
-        <Package Id="B4B3A384-95D5-407A-BDE6-20D5F3020D9F" InstallerVersion="300" Compressed="yes"/>
+        <Package Id="4E02367F-B87C-4CE7-9724-9E67C203DADD" InstallerVersion="300" Compressed="yes"/>
         <Media Id="1" Cabinet="grim.cab" EmbedCab="yes" />
 
         <MajorUpgrade AllowDowngrades = "yes"/>