diff --git a/scripts/version.sh b/scripts/version.sh
index d5602e25..783ad3d8 100755
--- a/scripts/version.sh
+++ b/scripts/version.sh
@@ -72,14 +72,9 @@ fi
 
 # Update version for Windows installer.
 sed -i '' -e 's/" Version="[^\"]*"/" Version="'"$VERSION_NEXT"'"/g' wix/main.wxs
+sed -i '' -e 's/<Package Id="[^\"]*"/<Package Id="'"$(uuidgen)"'"/g' wix/main.wxs
 
-# ==================================
-# Update Android build.gradle file
-# and package version at Cargo.toml
-# ==================================
-
-# Update version in build.gradle
-
+# Update Android version in build.gradle
 sed -i'.bak' -e 's/versionName [0-9a-zA-Z -_]*/versionName "'"$VERSION_NEXT"'"/' android/app/build.gradle
 rm -f android/app/build.gradle.bak
 
diff --git a/wix/main.wxs b/wix/main.wxs
index 5ea34e69..6d299d96 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="0.2.3" UpgradeCode="C19F9B41-CD13-4F0E-B27D-E0EF8CF1CE91" Language="1033" Name="Grim" Manufacturer="Ardocrat">
-        <Package Id="7a18ee67-b049-4462-b18f-9e7748685781" InstallerVersion="300" Compressed="yes"/>
+        <Package Id="D612823B-B70E-4700-8D35-B71A1925FBFD" InstallerVersion="300" Compressed="yes"/>
         <Media Id="1" Cabinet="grim.cab" EmbedCab="yes" />
 
         <MajorUpgrade