References.md

@@ -8,7 +8,7 @@
 # Translators
 
 * [attop](https://github.com/utwente-fmt/attop): Attack tree  translator and Analyzer
-* [Adt2Upp](https://github.com/utwente-fmt/Adt2Upp): Attack tree convertor from ADTool to UPPAAL.
+* [Adt2Upp](https://github.com/utwente-fmt/Adt2Upp): Attack tree convertor from ADTool to UPPAAL. *Old*
 
 # Papers