diff --git a/ArduPlane/ReleaseNotes.txt b/ArduPlane/ReleaseNotes.txt
index ea21726ef0..f83e0cf44e 100644
--- a/ArduPlane/ReleaseNotes.txt
+++ b/ArduPlane/ReleaseNotes.txt
@@ -1,3 +1,13 @@
+Release 4.5.1 8th April 2024
+----------------------------
+
+This release fixes a critical bug in the CRSF R/C protocol parser that
+can lead to a handfault and a vehicle crashing. A similar fix was
+applied to the GHST protocol, although we believe that GHST could not
+be affected by the bug, so this was just a precaution.
+
+There are no other changes in this release.
+
 Release 4.5.0 2nd April 2024
 ----------------------------