diff --git a/external/Makefile b/external/Makefile
index 83f6c759c2f7..f3b067091420 100644
--- a/external/Makefile
+++ b/external/Makefile
@@ -1,6 +1,7 @@
-#	$NetBSD: Makefile,v 1.20 2018/01/08 11:05:02 jmcneill Exp $
+#	$NetBSD: Makefile,v 1.21 2018/04/07 22:39:31 christos Exp $
 
 SUBDIR+= apache2 atheros broadcom bsd cddl gpl2 gpl3 historical intel-fw-eula
-SUBDIR+= intel-fw-public ibm-public mit nvidia-firmware public-domain realtek
+SUBDIR+= intel-fw-public ibm-public mpl mit nvidia-firmware public-domain
+SUBDIR+= realtek
 
 .include <bsd.subdir.mk>
diff --git a/external/README b/external/README
index 23a069fc2ea0..25a852246451 100644
--- a/external/README
+++ b/external/README
@@ -1,4 +1,4 @@
-$NetBSD: README,v 1.15 2012/06/14 04:14:36 riz Exp $
+$NetBSD: README,v 1.16 2018/04/07 22:39:31 christos Exp $
 
 Organization of Sources:
 
@@ -79,6 +79,9 @@ The licenses currently used are:
 	mit		MIT (X11) style license.
 			http://www.opensource.org/licenses/mit-license.php
 
+	mpl		Mozilla Public license.
+			https://opensource.org/licenses/MPL-2.0
+
 	public-domain	Non-license for code that has been explicitly put
 			into the Public Domain.