diff --git a/advanced/creating-silent-dragon-msi-installer-for-windows-with-wixl.md b/advanced/creating-silent-dragon-msi-installer-for-windows-with-wixl.md
index 32ee769..5fcafa1 100644
--- a/advanced/creating-silent-dragon-msi-installer-for-windows-with-wixl.md
+++ b/advanced/creating-silent-dragon-msi-installer-for-windows-with-wixl.md
@@ -98,6 +98,11 @@ Below is a copy of the contents of the `SilentDragon-1.3.0.wxs` file Note that G
   </Product>
 </Wix>
 ```
+## Upgrade notes for new versions/releases 
+(https://www.firegiant.com/wix/tutorial/upgrades-and-modularization/)
+
+In order for new versions of the .msi to upgrade existing/older versions that may have been installed, the `Version` attribute needs to be incremented or changed to the new version and a new GUID for `Product` id needs to generated (c8fae41c-889b-4621-b343-76491cd91b1c in above example).
+
 ## Build MSI file from WiX source file
 ```
 wixl -v SilentDragon-1.3.0.wxs