diff --git a/dev/windows/engauge.wxs b/dev/windows/engauge.wxs
index d4c3da54..a96fc8c3 100644
--- a/dev/windows/engauge.wxs
+++ b/dev/windows/engauge.wxs
@@ -2,10 +2,10 @@
 <Wix xmlns='http://schemas.microsoft.com/wix/2006/wi'>
   <Product Name='Engauge Digitizer' 
            Manufacturer='Engauge Open Source Developers'
-	   Id='37DB671F-AF4A-4559-8F9A-1FEF9689D8DA'
+	   Id='FE975B0A-AAED-4AEA-9CA2-BC7248F9DC4A'
 	   UpgradeCode='00A6792B-65ED-4894-A48B-B95D63C62CC6'
 	   Language='1033' Codepage='1252' 
-           Version='8.0'>
+           Version='8.1'>
     <Package Id='*' Keywords='Installer' Description="Engauge Digitizer Installer"
 	     Comments='Engauge Digitizer is available from github.com' Manufacturer='Engauge Open Source Developers'
 	     InstallerVersion='100' Languages='1033' Compressed='yes' SummaryCodepage='1252' />