diff --git a/README.md b/README.md
index 94922aa..bb794fc 100644
--- a/README.md
+++ b/README.md
@@ -84,7 +84,7 @@ Building the project requires the following tools:
 
 * [JDK 15+](https://adoptopenjdk.net/)
 
-* [WiX Toolset](https://wixtoolset.org/) (Windows Only)
+* [WiX Toolset](https://wixtoolset.org/) (Windows Only, version 3 required)
 
 To build the project, clone the repository and run `mvn package`. To run the project, navigate to `target-fat-jar` and
 run `java -jar vatsim-map-[VERSION]-fat.jar`
@@ -92,4 +92,4 @@ run `java -jar vatsim-map-[VERSION]-fat.jar`
 ## Acknowledgements
 
 VATprism uses the [VAT-Spy Client Data Update Project](https://github.com/vatsimnetwork/vatspy-data-project) as a source
-of static data and the [VATSIM API](https://api.vatsim.net/api/) as a source of dynamic data.
\ No newline at end of file
+of static data and the [VATSIM API](https://api.vatsim.net/api/) as a source of dynamic data.