diff --git a/ArduPlane/ReleaseNotes.txt b/ArduPlane/ReleaseNotes.txt
index 277136de68..5d2677d74a 100644
--- a/ArduPlane/ReleaseNotes.txt
+++ b/ArduPlane/ReleaseNotes.txt
@@ -1,5 +1,14 @@
 ArduPilot Plane Release Notes:
-------------------------------
+------------------------------------------------------------------
+Release 4.5.5-beta2 27 July 2024
+
+Changes from 4.5.5-beta1
+
+1) Board specific enhancements and bug fixes
+
+- CubeRed's second core disabled at boot to avoid spurious writes to RAM
+- CubeRed bootloader's dual endpoint update method fixed
+------------------------------------------------------------------
 Release 4.5.5-beta1 1st July 2024
 
 Changes from 4.5.4