diff --git a/UPDATING b/UPDATING
index 05f64506da7c..414f11eb2cba 100644
--- a/UPDATING
+++ b/UPDATING
@@ -1,4 +1,4 @@
-$NetBSD: UPDATING,v 1.314 2020/09/12 08:31:39 mrg Exp $
+$NetBSD: UPDATING,v 1.315 2020/09/26 08:02:35 mrg Exp $
 
 This file (UPDATING) is intended to be a brief reference to recent
 changes that might cause problems in the build process, and a guide for
@@ -19,6 +19,10 @@ See also: BUILDING, build.sh, Makefile.
 Recent changes:
 ^^^^^^^^^^^^^^^
 
+20200925:
+	GNU MPC and MPFR have been updated.  At least MPFR needs cleaning
+	in both the tools and external dirs.
+
 20200912:
 	GCC 9 has arrived for Arm and x86 platforms, and will be coming
 	for several more, as will binutils 2.34.  Clean as required.