diff --git a/UPDATING b/UPDATING
index bf97bd1ed33b..17619ebcd638 100644
--- a/UPDATING
+++ b/UPDATING
@@ -27,6 +27,11 @@ 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".)
 
+20210411:
+	Commit 7763814fc9c2 changed the internal KAPI between
+	the krpc and NFS.  As such, the krpc, nfscommon and
+	nfscl modules must all be rebuilt from sources.
+
 20210330:
 	Commit 01ae8969a9ee fixed the NFSv4.1/4.2 server so that it
 	handles binding of the back channel as required by RFC5661.