diff --git a/include/WHISPER/Messages/Message.hpp b/include/WHISPER/Messages/Message.hpp
index 3c4009a..57b1f56 100644
--- a/include/WHISPER/Messages/Message.hpp
+++ b/include/WHISPER/Messages/Message.hpp
@@ -42,6 +42,10 @@ namespace WHISPER {
     SIMPLE,
     ///dummy string Data
     STRINGDATA,
+    /// Entity Equipment Update Message
+    SYSTEMSTATE_UPDATE,
+    ///Entity internal Tracklist Update Message
+    TRACKLIST_UPDATE,
     /// Command messages
     COMMAND,
     ///