diff --git a/doc/3RDPARTY b/doc/3RDPARTY
index a94444d84952..10eda071cf3a 100644
--- a/doc/3RDPARTY
+++ b/doc/3RDPARTY
@@ -1,4 +1,4 @@
-#	$NetBSD: 3RDPARTY,v 1.1552 2018/08/18 09:00:28 christos Exp $
+#	$NetBSD: 3RDPARTY,v 1.1553 2018/08/18 14:18:58 christos Exp $
 #
 # This file contains a list of the software that has been integrated into
 # NetBSD where we are not the primary maintainer.
@@ -40,7 +40,7 @@
 #
 
 Package:	acpica
-Version:	20180427
+Version:	20180810
 Current Vers:	20180810
 Maintainer:	Intel
 Archive Site:	http://www.acpica.org/downloads/
diff --git a/doc/CHANGES b/doc/CHANGES
index 771ca723e7d1..edb04cefcab1 100644
--- a/doc/CHANGES
+++ b/doc/CHANGES
@@ -1,4 +1,4 @@
-# LIST OF CHANGES FROM LAST RELEASE:			<$Revision: 1.2426 $>
+# LIST OF CHANGES FROM LAST RELEASE:			<$Revision: 1.2427 $>
 #
 #
 # [Note: This file does not mention every change made to the NetBSD source tree.
@@ -202,3 +202,4 @@ Changes from NetBSD 8.0 to NetBSD 9.0:
 	kernel: Remove etherip(4), replaced by l2tp(4). [maxv 20180814]
 	gnu-efi: Import version 3.0.8. [jmcneill 20180816]
 	OpenSSL: Imported 1.1.0i. [christos 20180818]
+	acpi(4): Updated ACPICA to 20180810. [christos 20180818]