diff --git a/UPDATING b/UPDATING
index 3a6255bc611..ca40607667b 100644
--- a/UPDATING
+++ b/UPDATING
@@ -27,6 +27,13 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 14.x IS SLOW:
 	world, or to merely disable the most expensive debugging functionality
 	at runtime, run "ln -s 'abort:false,junk:false' /etc/malloc.conf".)
 
+20230724:
+	CAM has been mechanically updated s/u_int(64|32|16|8)_t/uint\1_t/g
+	to move to the standard uintXX_t types from the old, traditional
+	BSD u_intXX_t types. This should be a NOP, but may cause problems
+	for out of tree changes. The SIMs were not updated since most of
+	the old u_intXX_t uses weren't due to CAM interfaces.
+
 20230629:
 	The heuristic for detecting old chromebooks with an EC bug that requires
 	atkbdc driver workarounds has changed. There should be no functional