diff --git a/ArduCopter/ReleaseNotes.txt b/ArduCopter/ReleaseNotes.txt
index a2d00ccb3a..8ffabd0d45 100644
--- a/ArduCopter/ReleaseNotes.txt
+++ b/ArduCopter/ReleaseNotes.txt
@@ -1,5 +1,12 @@
 ArduPilot Copter Release Notes:
 -------------------------------
+Release 4.5.4 12th June 2024
+
+Changes from 4.5.3
+
+Disable highres IMU sampling on ICM42670 fixing an issue on some versions of Pixhawk6X
+
+------------------------------------------------------------------
 Release 4.5.3 28th May 2024
 
 No changes from 4.5.3-beta1