diff --git a/RELEASE_NOTES b/RELEASE_NOTES
index 6baadbda..746fb870 100644
--- a/RELEASE_NOTES
+++ b/RELEASE_NOTES
@@ -3,6 +3,11 @@
 ** Keir Fraser <keir.xen@gmail.com>
 ************************************
 
+** v3.42 - 11 January 2024
+ - HFEv3: Various read/write improvements
+ - WDATA: Merge short write pulses, and apply de-jitter/precomp
+ - IMG, EDSK: Stream large sector writes to flash
+
 ** v3.41 - 14 July 2023
  - AT32F415: Fix timer handling since clock speed increase (v3.39).
  - LCD: Faster power-on initialisation. Don't wait for display to clear.