diff --git a/package.xml b/package.xml
index c29861a..3b8b2df 100644
--- a/package.xml
+++ b/package.xml
@@ -1,6 +1,7 @@
 <package format="2">
   <name>flexbe_app</name>
   <version>2.4.0</version>
+  <!-- NOTE: also sync the version in package.json when updating the version -->
   <description>
      flexbe_app provides a user interface (editor + runtime control) for the FlexBE behavior engine.
   </description>