diff --git a/AntennaTracker/ReleaseNotes.txt b/AntennaTracker/ReleaseNotes.txt
index d34bfb1908..7f1f2b4a6b 100644
--- a/AntennaTracker/ReleaseNotes.txt
+++ b/AntennaTracker/ReleaseNotes.txt
@@ -1,4 +1,22 @@
 Antenna Tracker Release Notes:
+------------------------------------------------------------------
+Release 4.5.0-beta4 22nd March 2024
+Changes from 4.5.0-beta3
+1) system changes
+
+- fixed a cache corruption issue with microSD card data on H7 based boards
+- rename parameter NET_ENABLED to NET_ENABLE
+- fixed FDCAN labels for adding new H7 boards
+- avoid logging dma.txt to save CPU
+- fixed roll/pitch in viewpro driver
+- added band X in VideoTX
+- fixed quaternion attitude reporting for Microstrain external AHRS
+- add RPLidarC1 proximity support
+
+2) new boards
+- added MicoAir405v2
+- add Orqa F405 Pro
+
 ------------------------------------------------------------------
 AntennaTracker 4.5.0 beta3 14-Mar-2024
 Changes from 4.5.0 beta1