diff --git a/config.guess b/config.guess
index 699b3a1..7f74817 100755
--- a/config.guess
+++ b/config.guess
@@ -2,7 +2,7 @@
 # Attempt to guess a canonical system name.
 #   Copyright 1992-2020 Free Software Foundation, Inc.
 
-timestamp='2020-11-19'
+timestamp='2020-12-22'
 
 # 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
@@ -996,6 +996,9 @@ EOF
     k1om:Linux:*:*)
 	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
 	exit ;;
+    loongarch32:Linux:*:* | loongarch64:Linux:*:* | loongarchx32:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
     m32r*:Linux:*:*)
 	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
 	exit ;;
diff --git a/config.sub b/config.sub
index 19c9553..90bb8ae 100755
--- a/config.sub
+++ b/config.sub
@@ -2,7 +2,7 @@
 # Configuration validation subroutine script.
 #   Copyright 1992-2020 Free Software Foundation, Inc.
 
-timestamp='2020-12-02'
+timestamp='2020-12-22'
 
 # 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
@@ -1185,6 +1185,7 @@ case $cpu-$vendor in
 			| k1om \
 			| le32 | le64 \
 			| lm32 \
+			| loongarch32 | loongarch64 | loongarchx32 \
 			| m32c | m32r | m32rle \
 			| m5200 | m68000 | m680[012346]0 | m68360 | m683?2 | m68k \
 			| m6811 | m68hc11 | m6812 | m68hc12 | m68hcs12x \
diff --git a/doc/config.guess.1 b/doc/config.guess.1
index 3047b23..cefa32b 100644
--- a/doc/config.guess.1
+++ b/doc/config.guess.1
@@ -1,5 +1,5 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.47.16.
-.TH CONFIG.GUESS "1" "December 2020" "GNU config.guess (2020-11-19)" "User Commands"
+.TH CONFIG.GUESS "1" "December 2020" "GNU config.guess (2020-12-22)" "User Commands"
 .SH NAME
 config.guess \- guess the build system triplet
 .SH SYNOPSIS
diff --git a/doc/config.sub.1 b/doc/config.sub.1
index 42218aa..6727b93 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" "November 2020" "GNU config.sub (2020-11-19)" "User Commands"
+.TH CONFIG.SUB "1" "December 2020" "GNU config.sub (2020-12-22)" "User Commands"
 .SH NAME
 config.sub \- validate and canonicalize a configuration triplet
 .SH SYNOPSIS
diff --git a/testsuite/config-guess.data b/testsuite/config-guess.data
index b720f76..7ea8766 100644
--- a/testsuite/config-guess.data
+++ b/testsuite/config-guess.data
@@ -83,6 +83,9 @@ i86pc | 5.6 | SunOS | ignored | ignored | i386-pc-solaris2.6
 i86xen | 5.0 | AuroraUX | ignored | ignored | i386-pc-auroraux5.0
 i86xen | 5.6 | SunOS | ignored | ignored | i386-pc-solaris2.6
 k1om | 2.6.38 | Linux | ignored | ignored | k1om-unknown-linux-gnu
+loongarch32 | ignored | Linux | ignored | ignored | loongarch32-unknown-linux-gnu
+loongarch64 | ignored | Linux | ignored | ignored | loongarch64-unknown-linux-gnu
+loongarchx32 | ignored | Linux | ignored | ignored | loongarchx32-unknown-linux-gnu
 m88k | 7.0 | CX/UX | ignored | ignored | m88k-harris-cxux7
 macppc | 1.0 | MirBSD | ignored | ignored | powerpc-unknown-mirbsd1.0
 mips | 1.0 | OSF1 | ignored | ignored | mips-dec-osf1
diff --git a/testsuite/config-sub.data b/testsuite/config-sub.data
index de870d5..5dd9b8e 100644
--- a/testsuite/config-sub.data
+++ b/testsuite/config-sub.data
@@ -319,6 +319,18 @@ leon3-elf					sparc-leon3-elf
 leon3-vxworks					sparc-leon3-vxworks
 lm32						lm32-unknown-none
 lm32-elf					lm32-unknown-elf
+loongarch32					loongarch32-unknown-none
+loongarch32-elf					loongarch32-unknown-elf
+loongarch32-linux				loongarch32-unknown-linux-gnu
+loongarch32-loongson-elf			loongarch32-loongson-elf
+loongarch64					loongarch64-unknown-none
+loongarch64-elf					loongarch64-unknown-elf
+loongarch64-linux				loongarch64-unknown-linux-gnu
+loongarch64-loongson-elf			loongarch64-loongson-elf
+loongarchx32					loongarchx32-unknown-none
+loongarchx32-elf				loongarchx32-unknown-elf
+loongarchx32-linux				loongarchx32-unknown-linux-gnu
+loongarchx32-loongson-elf			loongarchx32-loongson-elf
 m3230						mips-mips-sysv
 m32c						m32c-unknown-none
 m32c-elf					m32c-unknown-elf