diff --git a/config.sub b/config.sub
index 7f7d0b0..1c15fab 100755
--- a/config.sub
+++ b/config.sub
@@ -2,7 +2,7 @@
 # Configuration validation subroutine script.
 #   Copyright 1992-2021 Free Software Foundation, Inc.
 
-timestamp='2021-03-10'
+timestamp='2021-04-16'
 
 # This file is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
@@ -1707,7 +1707,7 @@ case $os in
 	     | nindy* | vxsim* | vxworks* | ebmon* | hms* | mvs* \
 	     | clix* | riscos* | uniplus* | iris* | isc* | rtu* | xenix* \
 	     | mirbsd* | netbsd* | dicos* | openedition* | ose* \
-	     | bitrig* | openbsd* | solidbsd* | libertybsd* | os108* \
+	     | bitrig* | openbsd* | secbsd* | solidbsd* | libertybsd* | os108* \
 	     | ekkobsd* | freebsd* | riscix* | lynxos* | os400* \
 	     | bosx* | nextstep* | cxux* | aout* | elf* | oabi* \
 	     | ptx* | coff* | ecoff* | winnt* | domain* | vsta* \
diff --git a/doc/config.sub.1 b/doc/config.sub.1
index 317c8c4..ebdbd09 100644
--- a/doc/config.sub.1
+++ b/doc/config.sub.1
@@ -1,5 +1,5 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.47.16.
-.TH CONFIG.SUB "1" "March 2021" "GNU config.sub (2021-03-10)" "User Commands"
+.TH CONFIG.SUB "1" "April 2021" "GNU config.sub (2021-04-16)" "User Commands"
 .SH NAME
 config.sub \- validate and canonicalize a configuration triplet
 .SH SYNOPSIS
diff --git a/testsuite/config-sub.data b/testsuite/config-sub.data
index 101a4c4..1d5908e 100644
--- a/testsuite/config-sub.data
+++ b/testsuite/config-sub.data
@@ -817,6 +817,7 @@ x86_64-pc-ptx					x86_64-pc-ptx
 x86_64-ptx					x86_64-pc-ptx
 x86_64-qnx					x86_64-pc-qnx
 x86_64-redox					x86_64-pc-redox
+x86_64-secbsd					x86_64-pc-secbsd
 x86_64-sortix					x86_64-pc-sortix
 x86_64-twizzler				x86_64-pc-twizzler
 x86_64-unknown-ptx				x86_64-sequent-ptx