diff --git a/UPDATING b/UPDATING
index e49fe07f6e70..16b132dbf3ad 100644
--- a/UPDATING
+++ b/UPDATING
@@ -1,4 +1,4 @@
-$NetBSD: UPDATING,v 1.262 2015/04/14 14:18:59 christos Exp $
+$NetBSD: UPDATING,v 1.263 2015/09/19 18:31:41 dholland 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:
 ^^^^^^^^^^^^^^^
 
+20150818:
+	New acpica requires "make cleandir" in src/external/bsd/acpica
+	again.
+
 20150413:
 	New acpica requires "make cleandir" and reinstalling yacc
 	in /usr/src/external/bsd/byacc and /usr/src/tools/yacc and