diff --git a/9_Firmware/9_3_GUI/GUI_versions.txt b/9_Firmware/9_3_GUI/GUI_versions.txt
index 9ae3a74..37910ec 100644
--- a/9_Firmware/9_3_GUI/GUI_versions.txt
+++ b/9_Firmware/9_3_GUI/GUI_versions.txt
@@ -3,4 +3,7 @@ GUI_V2 ==> added STM32 USB CDC
 GUI_V3 ==> added Pitch to STM32 USB Packet and pitch correction to the Elevation 
 GUI_V3 ==> Added Google_Map, real time target plot, Chirp duration_2
 GUI_V4 ==> Added pitch correction
-GUI_V5 ==> Added Mercury Color
\ No newline at end of file
+
+GUI_V5 ==> Added Mercury Color
+
+GUI_V6 ==> Added USB3 FT601 support