diff --git a/UPDATING b/UPDATING
index d10e21604558..4ec6f29d7e83 100644
--- a/UPDATING
+++ b/UPDATING
@@ -26,6 +26,11 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 13.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".)
 
+20200105:
+	ncurses installation has been modified to only keep the widechar
+	enabled version.  Incremental build is broken for that change, so it
+	requires a clean build.
+
 20201223:
 	The FreeBSD project has migrated from Subversion to Git. Temporary
 	instructions can be found at