diff --git a/AUTHORS b/AUTHORS
index 284c530f..dc9127e4 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -74,7 +74,7 @@ With suggestions/comments/bug reports from a cast of ... well ...
 hundreds, anyway :)
 
 -------------------------------------------------------------------------------
-Copyright (C) 1997-2019 Free Software Foundation, Inc.
+Copyright (C) 1997-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/Basic.mk.template b/Basic.mk.template
index 8a24810b..152163dd 100644
--- a/Basic.mk.template
+++ b/Basic.mk.template
@@ -10,7 +10,7 @@
 #
 #   make.exe -f Basic.mk
 #
-# Copyright (C) 2017-2019 Free Software Foundation, Inc.
+# Copyright (C) 2017-2020 Free Software Foundation, Inc.
 # This file is part of GNU Make.
 #
 # GNU Make is free software; you can redistribute it and/or modify it under
diff --git a/Makefile.am b/Makefile.am
index b56f1e26..8cc39c92 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,6 +1,6 @@
 # This is a -*-Makefile-*-, or close enough
 #
-# Copyright (C) 1997-2019 Free Software Foundation, Inc.
+# Copyright (C) 1997-2020 Free Software Foundation, Inc.
 # This file is part of GNU Make.
 #
 # GNU Make is free software; you can redistribute it and/or modify it under
diff --git a/NEWS b/NEWS
index 4c3e8a2e..0a9094ce 100644
--- a/NEWS
+++ b/NEWS
@@ -1610,7 +1610,7 @@ Version 3.05
 (Changes from versions 1 through 3.05 were never recorded.  Sorry.)
 
 -------------------------------------------------------------------------------
-Copyright (C) 1988-2019 Free Software Foundation, Inc.
+Copyright (C) 1988-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/README.Amiga b/README.Amiga
index 0d9b240b..b941da38 100644
--- a/README.Amiga
+++ b/README.Amiga
@@ -64,7 +64,7 @@ If you plan to use recursive makes, install make resident:
 
 
 -------------------------------------------------------------------------------
-Copyright (C) 1995-2019 Free Software Foundation, Inc.
+Copyright (C) 1995-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/README.DOS.template b/README.DOS.template
index 2f9fb2bf..fbb563ec 100644
--- a/README.DOS.template
+++ b/README.DOS.template
@@ -280,7 +280,7 @@ Bug reports:
 
 
 -------------------------------------------------------------------------------
-Copyright (C) 1996-2019 Free Software Foundation, Inc.
+Copyright (C) 1996-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/README.OS2.template b/README.OS2.template
index 9bea2c84..54450d95 100644
--- a/README.OS2.template
+++ b/README.OS2.template
@@ -160,7 +160,7 @@ from the make source tree.
 
 
 -------------------------------------------------------------------------------
-Copyright (C) 2003-2019 Free Software Foundation, Inc.
+Copyright (C) 2003-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/README.W32.template b/README.W32.template
index 54b0d509..fe88a771 100644
--- a/README.W32.template
+++ b/README.W32.template
@@ -345,7 +345,7 @@ Bug reports:
         is described in the GNU make manual and the base README.
 
 -------------------------------------------------------------------------------
-Copyright (C) 1996-2019 Free Software Foundation, Inc.
+Copyright (C) 1996-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/README.customs b/README.customs
index 4fd5fbb6..a62e003b 100644
--- a/README.customs
+++ b/README.customs
@@ -96,7 +96,7 @@ SunOS 4.1.x:
 
 
 -------------------------------------------------------------------------------
-Copyright (C) 1998-2019 Free Software Foundation, Inc.
+Copyright (C) 1998-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/README.git b/README.git
index 15c78516..543fd357 100644
--- a/README.git
+++ b/README.git
@@ -1,7 +1,7 @@
                                                                      -*-text-*-
 
 -------------------------------------------------------------------------------
-Copyright (C) 2002-2019 Free Software Foundation, Inc.
+Copyright (C) 2002-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/README.template b/README.template
index 704ef212..795c3908 100644
--- a/README.template
+++ b/README.template
@@ -172,7 +172,7 @@ at the right README!
 
 
 -------------------------------------------------------------------------------
-Copyright (C) 1988-2019 Free Software Foundation, Inc.
+Copyright (C) 1988-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/TODO.private b/TODO.private
index 3f84052f..581f0cdd 100644
--- a/TODO.private
+++ b/TODO.private
@@ -101,7 +101,7 @@ The Rest of the List
 
 
 -------------------------------------------------------------------------------
-Copyright (C) 1997-2019 Free Software Foundation, Inc.
+Copyright (C) 1997-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/bootstrap.bat b/bootstrap.bat
index f68a414a..44cb9536 100644
--- a/bootstrap.bat
+++ b/bootstrap.bat
@@ -1,5 +1,5 @@
 @echo off
-:: Copyright (C) 2018-2019 Free Software Foundation, Inc.
+:: Copyright (C) 2018-2020 Free Software Foundation, Inc.
 :: This file is part of GNU Make.
 ::
 :: GNU Make is free software; you can redistribute it and/or modify it under
diff --git a/bootstrap.conf b/bootstrap.conf
index 5e1d538e..7c4c9ab7 100644
--- a/bootstrap.conf
+++ b/bootstrap.conf
@@ -1,6 +1,6 @@
 # Bootstrap configuration.                                   -*-shell-script-*-
 
-# Copyright (C) 2018-2019 Free Software Foundation, Inc.
+# Copyright (C) 2018-2020 Free Software Foundation, Inc.
 
 # GNU Make is free software: you can redistribute it and/or modify it under
 # the terms of the GNU General Public License as published by the Free
diff --git a/build.cfg.in b/build.cfg.in
index 3daa65a6..80ce9b45 100644
--- a/build.cfg.in
+++ b/build.cfg.in
@@ -1,7 +1,7 @@
 # Configuration for building GNU Make in the absence of any 'make' program.
 # @configure_input@
 
-# Copyright (C) 1993-2019 Free Software Foundation, Inc.
+# Copyright (C) 1993-2020 Free Software Foundation, Inc.
 # This file is part of GNU Make.
 #
 # GNU Make is free software; you can redistribute it and/or modify it under
diff --git a/build.sh b/build.sh
index 7d288914..4c88b534 100755
--- a/build.sh
+++ b/build.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Shell script to build GNU Make in the absence of any 'make' program.
 
-# Copyright (C) 1993-2019 Free Software Foundation, Inc.
+# Copyright (C) 1993-2020 Free Software Foundation, Inc.
 # This file is part of GNU Make.
 #
 # GNU Make is free software; you can redistribute it and/or modify it under
diff --git a/build_w32.bat b/build_w32.bat
index b245d053..553e9d9c 100755
--- a/build_w32.bat
+++ b/build_w32.bat
@@ -1,5 +1,5 @@
 @echo off
-:: Copyright (C) 1996-2019 Free Software Foundation, Inc.
+:: Copyright (C) 1996-2020 Free Software Foundation, Inc.
 :: This file is part of GNU Make.
 ::
 :: GNU Make is free software; you can redistribute it and/or modify it under
diff --git a/builddos.bat b/builddos.bat
index c64e7efc..9cecabec 100644
--- a/builddos.bat
+++ b/builddos.bat
@@ -1,5 +1,5 @@
 @echo off
-rem Copyright (C) 1998-2019 Free Software Foundation, Inc.
+rem Copyright (C) 1998-2020 Free Software Foundation, Inc.
 rem This file is part of GNU Make.
 rem
 rem GNU Make is free software; you can redistribute it and/or modify it under
diff --git a/configure.ac b/configure.ac
index 5daff11e..95d0dee6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,6 @@
 # Process this file with autoconf to produce a configure script.
 #
-# Copyright (C) 1993-2019 Free Software Foundation, Inc.
+# Copyright (C) 1993-2020 Free Software Foundation, Inc.
 # This file is part of GNU Make.
 #
 # GNU Make is free software; you can redistribute it and/or modify it under
diff --git a/doc/Makefile.am b/doc/Makefile.am
index b301f626..7bcf1c2b 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -1,5 +1,5 @@
 # -*-Makefile-*-, or close enough
-# Copyright (C) 2000-2019 Free Software Foundation, Inc.
+# Copyright (C) 2000-2020 Free Software Foundation, Inc.
 # This file is part of GNU Make.
 #
 # GNU Make is free software; you can redistribute it and/or modify it under
diff --git a/doc/make.1 b/doc/make.1
index c9b60a31..dbd023fa 100644
--- a/doc/make.1
+++ b/doc/make.1
@@ -361,7 +361,7 @@ This manual page contributed by Dennis Morse of Stanford University.
 Further updates contributed by Mike Frysinger.  It has been reworked by Roland
 McGrath.  Maintained by Paul Smith.
 .SH "COPYRIGHT"
-Copyright \(co 1992-1993, 1996-2019 Free Software Foundation, Inc.
+Copyright \(co 1992-1993, 1996-2020 Free Software Foundation, Inc.
 This file is part of
 .IR "GNU make" .
 .LP
diff --git a/doc/make.texi b/doc/make.texi
index b210a0d4..135f58bc 100644
--- a/doc/make.texi
+++ b/doc/make.texi
@@ -26,8 +26,8 @@ of @cite{The GNU Make Manual}, for GNU @code{make} version @value{VERSION}.
 
 Copyright @copyright{} 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
 1996, 1997, 1998, 1999, 2000, 2002, 2003, 2004, 2005, 2006, 2007,
-2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
-Free Software Foundation, Inc.
+2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
+2020 Free Software Foundation, Inc.
 
 @quotation
 Permission is granted to copy, distribute and/or modify this document
diff --git a/m4/acinclude.m4 b/m4/acinclude.m4
index e9ac2443..a812aa08 100644
--- a/m4/acinclude.m4
+++ b/m4/acinclude.m4
@@ -1,7 +1,7 @@
 dnl acinclude.m4 -- Extra macros needed for GNU make.
 dnl
 dnl Automake will incorporate this into its generated aclocal.m4.
-dnl Copyright (C) 1998-2019 Free Software Foundation, Inc.
+dnl Copyright (C) 1998-2020 Free Software Foundation, Inc.
 dnl This file is part of GNU Make.
 dnl
 dnl GNU Make is free software; you can redistribute it and/or modify it under
diff --git a/m4/dospaths.m4 b/m4/dospaths.m4
index e6683f62..4c77e333 100644
--- a/m4/dospaths.m4
+++ b/m4/dospaths.m4
@@ -1,7 +1,7 @@
 # Test if the system uses DOS-style pathnames (drive specs and backslashes)
 # By Paul Smith <psmith@gnu.org>.  Based on dos.m4 by Jim Meyering.
 #
-# Copyright (C) 1993-2019 Free Software Foundation, Inc.
+# Copyright (C) 1993-2020 Free Software Foundation, Inc.
 # This file is part of GNU Make.
 #
 # GNU Make is free software; you can redistribute it and/or modify it under
diff --git a/maintMakefile b/maintMakefile
index a467ac08..172079c1 100644
--- a/maintMakefile
+++ b/maintMakefile
@@ -483,7 +483,7 @@ $(UPLOADS): $(DIST_ARCHIVES) $(DIST_ARCHIVES_SIG) $(DIST_ARCHIVES_DIRECTIVE)
 # Rebuild Makefile.in if this file is modifed.
 Makefile.in: maintMakefile
 
-# Copyright (C) 1997-2019 Free Software Foundation, Inc.
+# Copyright (C) 1997-2020 Free Software Foundation, Inc.
 # This file is part of GNU Make.
 #
 # GNU Make is free software; you can redistribute it and/or modify it under
diff --git a/makefile.com b/makefile.com
index 448867e3..eff906ef 100644
--- a/makefile.com
+++ b/makefile.com
@@ -154,7 +154,7 @@ $ exit
 $ endsubroutine : compileit
 $!
 $!-----------------------------------------------------------------------------
-$!Copyright (C) 1996-2019 Free Software Foundation, Inc.
+$!Copyright (C) 1996-2020 Free Software Foundation, Inc.
 $!This file is part of GNU Make.
 $!
 $!GNU Make is free software; you can redistribute it and/or modify it under
diff --git a/mk/Amiga.mk b/mk/Amiga.mk
index 4e7bb0d7..074c53e0 100644
--- a/mk/Amiga.mk
+++ b/mk/Amiga.mk
@@ -2,7 +2,7 @@
 #
 # Amiga overrides for use with Basic.mk.
 #
-# Copyright (C) 2017-2019 Free Software Foundation, Inc.
+# Copyright (C) 2017-2020 Free Software Foundation, Inc.
 # This file is part of GNU Make.
 #
 # GNU Make is free software; you can redistribute it and/or modify it under
diff --git a/mk/Posix.mk.in b/mk/Posix.mk.in
index 3891aa0f..fe24b958 100644
--- a/mk/Posix.mk.in
+++ b/mk/Posix.mk.in
@@ -2,7 +2,7 @@
 #
 # POSIX overrides for use with Basic.mk.
 #
-# Copyright (C) 2017-2019 Free Software Foundation, Inc.
+# Copyright (C) 2017-2020 Free Software Foundation, Inc.
 # This file is part of GNU Make.
 #
 # GNU Make is free software; you can redistribute it and/or modify it under
diff --git a/mk/VMS.mk b/mk/VMS.mk
index 57591a00..75d33fe4 100644
--- a/mk/VMS.mk
+++ b/mk/VMS.mk
@@ -2,7 +2,7 @@
 #
 # VMS overrides for use with Basic.mk.
 #
-# Copyright (C) 2017-2019 Free Software Foundation, Inc.
+# Copyright (C) 2017-2020 Free Software Foundation, Inc.
 # This file is part of GNU Make.
 #
 # GNU Make is free software; you can redistribute it and/or modify it under
diff --git a/mk/Windows32.mk b/mk/Windows32.mk
index a5d6ad94..494be02c 100644
--- a/mk/Windows32.mk
+++ b/mk/Windows32.mk
@@ -2,7 +2,7 @@
 #
 # Windows overrides for use with Basic.mk.
 #
-# Copyright (C) 2017-2019 Free Software Foundation, Inc.
+# Copyright (C) 2017-2020 Free Software Foundation, Inc.
 # This file is part of GNU Make.
 #
 # GNU Make is free software; you can redistribute it and/or modify it under
diff --git a/mk/msdosdjgpp.mk b/mk/msdosdjgpp.mk
index 724a4fda..420937de 100644
--- a/mk/msdosdjgpp.mk
+++ b/mk/msdosdjgpp.mk
@@ -2,7 +2,7 @@
 #
 # MS-DOS overrides for use with Basic.mk.
 #
-# Copyright (C) 2017-2019 Free Software Foundation, Inc.
+# Copyright (C) 2017-2020 Free Software Foundation, Inc.
 # This file is part of GNU Make.
 #
 # GNU Make is free software; you can redistribute it and/or modify it under
diff --git a/po/POTFILES.in b/po/POTFILES.in
index 9acc9455..46e53ef3 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -1,5 +1,5 @@
 # List of source files containing translatable strings.
-# Copyright (C) 2000-2019 Free Software Foundation, Inc.
+# Copyright (C) 2000-2020 Free Software Foundation, Inc.
 # This file is part of GNU Make.
 #
 # GNU Make is free software; you can redistribute it and/or modify it under
diff --git a/scripts/copyright-update b/scripts/copyright-update
index 6740bf0f..6728fd9f 100755
--- a/scripts/copyright-update
+++ b/scripts/copyright-update
@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# Copyright (C) 2014-2019 Free Software Foundation, Inc.
+# Copyright (C) 2014-2020 Free Software Foundation, Inc.
 # This file is part of GNU Make.
 #
 # Update GNU make copyrights using gnulib update-copyright
diff --git a/src/amiga.c b/src/amiga.c
index 5f153857..5189a022 100644
--- a/src/amiga.c
+++ b/src/amiga.c
@@ -1,5 +1,5 @@
 /* Running commands on Amiga
-Copyright (C) 1995-2019 Free Software Foundation, Inc.
+Copyright (C) 1995-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/amiga.h b/src/amiga.h
index 3aa0fd2d..5bc35318 100644
--- a/src/amiga.h
+++ b/src/amiga.h
@@ -1,5 +1,5 @@
 /* Definitions for amiga specific things
-Copyright (C) 1995-2019 Free Software Foundation, Inc.
+Copyright (C) 1995-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/ar.c b/src/ar.c
index cdd6538d..62919ff3 100644
--- a/src/ar.c
+++ b/src/ar.c
@@ -1,5 +1,5 @@
 /* Interface to 'ar' archives for GNU Make.
-Copyright (C) 1988-2019 Free Software Foundation, Inc.
+Copyright (C) 1988-2020 Free Software Foundation, Inc.
 
 This file is part of GNU Make.
 
diff --git a/src/arscan.c b/src/arscan.c
index 2dc39f7b..3ce21db8 100644
--- a/src/arscan.c
+++ b/src/arscan.c
@@ -1,5 +1,5 @@
 /* Library function for scanning an archive file.
-Copyright (C) 1987-2019 Free Software Foundation, Inc.
+Copyright (C) 1987-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/commands.c b/src/commands.c
index d7bdded7..88c33a32 100644
--- a/src/commands.c
+++ b/src/commands.c
@@ -1,5 +1,5 @@
 /* Command processing for GNU Make.
-Copyright (C) 1988-2019 Free Software Foundation, Inc.
+Copyright (C) 1988-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/commands.h b/src/commands.h
index 92687248..d86752c8 100644
--- a/src/commands.h
+++ b/src/commands.h
@@ -1,5 +1,5 @@
 /* Definition of data structures describing shell commands for GNU Make.
-Copyright (C) 1988-2019 Free Software Foundation, Inc.
+Copyright (C) 1988-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/config.ami.template b/src/config.ami.template
index 647c7fd4..0d2baa21 100644
--- a/src/config.ami.template
+++ b/src/config.ami.template
@@ -1,5 +1,5 @@
 /* config.h -- hand-massaged for Amiga                                  -*-C-*-
-Copyright (C) 1995-2019 Free Software Foundation, Inc.
+Copyright (C) 1995-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/config.h-vms.template b/src/config.h-vms.template
index f957b256..7cd393db 100644
--- a/src/config.h-vms.template
+++ b/src/config.h-vms.template
@@ -1,6 +1,6 @@
 /* config.h-vms. Generated by hand by Klaus Kämpf <kkaempf@rmi.de>      -*-C-*-
 
-Copyright (C) 1996-2019 Free Software Foundation, Inc.
+Copyright (C) 1996-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/config.h.W32.template b/src/config.h.W32.template
index 7c7c8cde..9a9ccfe4 100644
--- a/src/config.h.W32.template
+++ b/src/config.h.W32.template
@@ -1,6 +1,6 @@
 /* config.h.W32 -- hand-massaged config.h file for Windows builds       -*-C-*-
 
-Copyright (C) 1996-2019 Free Software Foundation, Inc.
+Copyright (C) 1996-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/configh.dos.template b/src/configh.dos.template
index dead7362..3dd78d37 100644
--- a/src/configh.dos.template
+++ b/src/configh.dos.template
@@ -1,6 +1,6 @@
 /* configh.dos -- hand-massaged config.h file for MS-DOS builds         -*-C-*-
 
-Copyright (C) 1994-2019 Free Software Foundation, Inc.
+Copyright (C) 1994-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/debug.h b/src/debug.h
index 106c5bac..514b7e8e 100644
--- a/src/debug.h
+++ b/src/debug.h
@@ -1,5 +1,5 @@
 /* Debugging macros and interface.
-Copyright (C) 1999-2019 Free Software Foundation, Inc.
+Copyright (C) 1999-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/default.c b/src/default.c
index 30fa0253..751ea154 100644
--- a/src/default.c
+++ b/src/default.c
@@ -1,5 +1,5 @@
 /* Data base of default implicit rules for GNU Make.
-Copyright (C) 1988-2019 Free Software Foundation, Inc.
+Copyright (C) 1988-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/dep.h b/src/dep.h
index ef5e7460..04677f1b 100644
--- a/src/dep.h
+++ b/src/dep.h
@@ -1,5 +1,5 @@
 /* Definitions of dependency data structures for GNU Make.
-Copyright (C) 1988-2019 Free Software Foundation, Inc.
+Copyright (C) 1988-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/dir.c b/src/dir.c
index b867f950..862a18ea 100644
--- a/src/dir.c
+++ b/src/dir.c
@@ -1,5 +1,5 @@
 /* Directory hashing for GNU Make.
-Copyright (C) 1988-2019 Free Software Foundation, Inc.
+Copyright (C) 1988-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/expand.c b/src/expand.c
index e18e9673..0b6bb255 100644
--- a/src/expand.c
+++ b/src/expand.c
@@ -1,5 +1,5 @@
 /* Variable expansion functions for GNU Make.
-Copyright (C) 1988-2019 Free Software Foundation, Inc.
+Copyright (C) 1988-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/file.c b/src/file.c
index b46c6c6f..2f1425e6 100644
--- a/src/file.c
+++ b/src/file.c
@@ -1,5 +1,5 @@
 /* Target file management for GNU Make.
-Copyright (C) 1988-2019 Free Software Foundation, Inc.
+Copyright (C) 1988-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/filedef.h b/src/filedef.h
index c33e859f..972f8533 100644
--- a/src/filedef.h
+++ b/src/filedef.h
@@ -1,5 +1,5 @@
 /* Definition of target file data structures for GNU Make.
-Copyright (C) 1988-2019 Free Software Foundation, Inc.
+Copyright (C) 1988-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/function.c b/src/function.c
index 4ebff168..0917e0cd 100644
--- a/src/function.c
+++ b/src/function.c
@@ -1,5 +1,5 @@
 /* Builtin function expansion for GNU Make.
-Copyright (C) 1988-2019 Free Software Foundation, Inc.
+Copyright (C) 1988-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/getopt.c b/src/getopt.c
index 50bb94ff..35e71ef8 100644
--- a/src/getopt.c
+++ b/src/getopt.c
@@ -3,7 +3,7 @@ NOTE: getopt is now part of the C library, so if you don't know what
 "Keep this file name-space clean" means, talk to drepper@gnu.org
 before changing it!
 
-Copyright (C) 1987-2019 Free Software Foundation, Inc.
+Copyright (C) 1987-2020 Free Software Foundation, Inc.
 
 NOTE: The canonical source of this file is maintained with the GNU C Library.
 Bugs can be reported to bug-glibc@gnu.org.
diff --git a/src/getopt.h b/src/getopt.h
index edd7fabf..abfc31e7 100644
--- a/src/getopt.h
+++ b/src/getopt.h
@@ -1,5 +1,5 @@
 /* Declarations for getopt.
-Copyright (C) 1989-2019 Free Software Foundation, Inc.
+Copyright (C) 1989-2020 Free Software Foundation, Inc.
 
 NOTE: The canonical source of this file is maintained with the GNU C Library.
 Bugs can be reported to bug-glibc@gnu.org.
diff --git a/src/getopt1.c b/src/getopt1.c
index 9ce70d00..0bef6b03 100644
--- a/src/getopt1.c
+++ b/src/getopt1.c
@@ -1,5 +1,5 @@
 /* getopt_long and getopt_long_only entry points for GNU getopt.
-Copyright (C) 1987-1994, 1996-2019 Free Software Foundation, Inc.
+Copyright (C) 1987-1994, 1996-2020 Free Software Foundation, Inc.
 
 NOTE: The canonical source of this file is maintained with the GNU C Library.
 Bugs can be reported to bug-glibc@gnu.org.
diff --git a/src/gettext.h b/src/gettext.h
index 0804dc85..8647b370 100644
--- a/src/gettext.h
+++ b/src/gettext.h
@@ -1,5 +1,5 @@
 /* Convenience header for conditional use of GNU <libintl.h>.
-Copyright (C) 1995-2019 Free Software Foundation, Inc.
+Copyright (C) 1995-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/gmk-default.scm b/src/gmk-default.scm
index b96d17ed..ffcea6bd 100644
--- a/src/gmk-default.scm
+++ b/src/gmk-default.scm
@@ -1,5 +1,5 @@
 ;; Contents of the (gnu make) Guile module
-;; Copyright (C) 2011-2019 Free Software Foundation, Inc.
+;; Copyright (C) 2011-2020 Free Software Foundation, Inc.
 ;; This file is part of GNU Make.
 ;;
 ;; GNU Make is free software; you can redistribute it and/or modify it under
diff --git a/src/gnumake.h b/src/gnumake.h
index 542cafb7..fe0f7f30 100644
--- a/src/gnumake.h
+++ b/src/gnumake.h
@@ -1,7 +1,7 @@
 /* External interfaces usable by dynamic objects loaded into GNU Make.
    --THIS API IS A "TECHNOLOGY PREVIEW" ONLY.  IT IS NOT A STABLE INTERFACE--
 
-Copyright (C) 2013-2019 Free Software Foundation, Inc.
+Copyright (C) 2013-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/guile.c b/src/guile.c
index 45431453..52f0e5cb 100644
--- a/src/guile.c
+++ b/src/guile.c
@@ -1,5 +1,5 @@
 /* GNU Guile interface for GNU Make.
-Copyright (C) 2011-2019 Free Software Foundation, Inc.
+Copyright (C) 2011-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/implicit.c b/src/implicit.c
index 2d442ce4..b281a177 100644
--- a/src/implicit.c
+++ b/src/implicit.c
@@ -1,5 +1,5 @@
 /* Implicit rule searching for GNU Make.
-Copyright (C) 1988-2019 Free Software Foundation, Inc.
+Copyright (C) 1988-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/job.c b/src/job.c
index 8c8f0ad9..5368f51e 100644
--- a/src/job.c
+++ b/src/job.c
@@ -1,5 +1,5 @@
 /* Job execution and handling for GNU Make.
-Copyright (C) 1988-2019 Free Software Foundation, Inc.
+Copyright (C) 1988-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/job.h b/src/job.h
index e20866a2..812df0d6 100644
--- a/src/job.h
+++ b/src/job.h
@@ -1,5 +1,5 @@
 /* Definitions for managing subprocesses in GNU Make.
-Copyright (C) 1992-2019 Free Software Foundation, Inc.
+Copyright (C) 1992-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/load.c b/src/load.c
index 33d5d3e5..27f5899f 100644
--- a/src/load.c
+++ b/src/load.c
@@ -1,5 +1,5 @@
 /* Loading dynamic objects for GNU Make.
-Copyright (C) 2012-2019 Free Software Foundation, Inc.
+Copyright (C) 2012-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/loadapi.c b/src/loadapi.c
index 5ea0a9c9..4914b2d9 100644
--- a/src/loadapi.c
+++ b/src/loadapi.c
@@ -1,5 +1,5 @@
 /* API for GNU Make dynamic objects.
-Copyright (C) 2013-2019 Free Software Foundation, Inc.
+Copyright (C) 2013-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/main.c b/src/main.c
index 761cf5cb..8d18d143 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,5 +1,5 @@
 /* Argument parsing and main program of GNU Make.
-Copyright (C) 1988-2019 Free Software Foundation, Inc.
+Copyright (C) 1988-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
@@ -3370,7 +3370,7 @@ print_version (void)
      year, and none of the rest of it should be translated (including the
      word "Copyright"), so it hardly seems worth it.  */
 
-  printf ("%sCopyright (C) 1988-2019 Free Software Foundation, Inc.\n",
+  printf ("%sCopyright (C) 1988-2020 Free Software Foundation, Inc.\n",
           precede);
 
   printf (_("%sLicense GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\n\
diff --git a/src/makeint.h b/src/makeint.h
index 325af9ed..09bfd8cc 100644
--- a/src/makeint.h
+++ b/src/makeint.h
@@ -1,5 +1,5 @@
 /* Miscellaneous global declarations and portability cruft for GNU Make.
-Copyright (C) 1988-2019 Free Software Foundation, Inc.
+Copyright (C) 1988-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/misc.c b/src/misc.c
index 9ed555ba..de19e375 100644
--- a/src/misc.c
+++ b/src/misc.c
@@ -1,5 +1,5 @@
 /* Miscellaneous generic support functions for GNU Make.
-Copyright (C) 1988-2019 Free Software Foundation, Inc.
+Copyright (C) 1988-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/os.h b/src/os.h
index 7a17a26e..e7bf37a5 100644
--- a/src/os.h
+++ b/src/os.h
@@ -1,5 +1,5 @@
 /* Declarations for operating system interfaces for GNU Make.
-Copyright (C) 2016-2019 Free Software Foundation, Inc.
+Copyright (C) 2016-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/output.c b/src/output.c
index ccb44143..22117496 100644
--- a/src/output.c
+++ b/src/output.c
@@ -1,5 +1,5 @@
 /* Output to stdout / stderr for GNU make
-Copyright (C) 2013-2019 Free Software Foundation, Inc.
+Copyright (C) 2013-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/output.h b/src/output.h
index e9743afa..a5065058 100644
--- a/src/output.h
+++ b/src/output.h
@@ -1,5 +1,5 @@
 /* Output to stdout / stderr for GNU make
-Copyright (C) 2013-2019 Free Software Foundation, Inc.
+Copyright (C) 2013-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/posixos.c b/src/posixos.c
index 4a5068fa..525f292c 100644
--- a/src/posixos.c
+++ b/src/posixos.c
@@ -1,5 +1,5 @@
 /* POSIX-based operating system interface for GNU Make.
-Copyright (C) 2016-2019 Free Software Foundation, Inc.
+Copyright (C) 2016-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/read.c b/src/read.c
index eec1c338..fa197fb8 100644
--- a/src/read.c
+++ b/src/read.c
@@ -1,5 +1,5 @@
 /* Reading and parsing of makefiles for GNU Make.
-Copyright (C) 1988-2019 Free Software Foundation, Inc.
+Copyright (C) 1988-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/remake.c b/src/remake.c
index a331a63a..fb237c5e 100644
--- a/src/remake.c
+++ b/src/remake.c
@@ -1,5 +1,5 @@
 /* Basic dependency engine for GNU Make.
-Copyright (C) 1988-2019 Free Software Foundation, Inc.
+Copyright (C) 1988-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/remote-cstms.c b/src/remote-cstms.c
index 853ce429..e3369288 100644
--- a/src/remote-cstms.c
+++ b/src/remote-cstms.c
@@ -3,7 +3,7 @@
    Please do not send bug reports or questions about it to
    the Make maintainers.
 
-Copyright (C) 1988-2019 Free Software Foundation, Inc.
+Copyright (C) 1988-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/remote-stub.c b/src/remote-stub.c
index 178523d9..05ab336d 100644
--- a/src/remote-stub.c
+++ b/src/remote-stub.c
@@ -1,5 +1,5 @@
 /* Template for the remote job exportation interface to GNU Make.
-Copyright (C) 1988-2019 Free Software Foundation, Inc.
+Copyright (C) 1988-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/rule.c b/src/rule.c
index 6645a2f7..358ec56f 100644
--- a/src/rule.c
+++ b/src/rule.c
@@ -1,5 +1,5 @@
 /* Pattern and suffix rule internals for GNU Make.
-Copyright (C) 1988-2019 Free Software Foundation, Inc.
+Copyright (C) 1988-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/rule.h b/src/rule.h
index db445aa2..120a6827 100644
--- a/src/rule.h
+++ b/src/rule.h
@@ -1,5 +1,5 @@
 /* Definitions for using pattern rules in GNU Make.
-Copyright (C) 1988-2019 Free Software Foundation, Inc.
+Copyright (C) 1988-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/signame.c b/src/signame.c
index e0b5cdc3..77bae3b6 100644
--- a/src/signame.c
+++ b/src/signame.c
@@ -1,5 +1,5 @@
 /* Convert between signal names and numbers.
-Copyright (C) 1990-2019 Free Software Foundation, Inc.
+Copyright (C) 1990-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/strcache.c b/src/strcache.c
index f5bd1987..cee9d093 100644
--- a/src/strcache.c
+++ b/src/strcache.c
@@ -1,5 +1,5 @@
 /* Constant string caching for GNU Make.
-Copyright (C) 2006-2019 Free Software Foundation, Inc.
+Copyright (C) 2006-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/variable.c b/src/variable.c
index 841ff11b..e3796224 100644
--- a/src/variable.c
+++ b/src/variable.c
@@ -1,5 +1,5 @@
 /* Internals of variables for GNU Make.
-Copyright (C) 1988-2019 Free Software Foundation, Inc.
+Copyright (C) 1988-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/variable.h b/src/variable.h
index dc0701ba..e8cba4fd 100644
--- a/src/variable.h
+++ b/src/variable.h
@@ -1,5 +1,5 @@
 /* Definitions for using variables in GNU Make.
-Copyright (C) 1988-2019 Free Software Foundation, Inc.
+Copyright (C) 1988-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/version.c b/src/version.c
index 8b7d14c0..36fad60d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -1,5 +1,5 @@
 /* Record version and build host architecture for GNU make.
-Copyright (C) 1988-2019 Free Software Foundation, Inc.
+Copyright (C) 1988-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/vms_exit.c b/src/vms_exit.c
index 124eab0c..b54bba1f 100644
--- a/src/vms_exit.c
+++ b/src/vms_exit.c
@@ -7,7 +7,7 @@
  * Author: John E. Malmberg
  */
 
-/* Copyright (C) 2014-2019 Free Software Foundation, Inc.
+/* Copyright (C) 2014-2020 Free Software Foundation, Inc.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
 terms of the GNU General Public License as published by the Free Software
diff --git a/src/vms_export_symbol.c b/src/vms_export_symbol.c
index b4c042ad..9b4ed786 100644
--- a/src/vms_export_symbol.c
+++ b/src/vms_export_symbol.c
@@ -4,7 +4,7 @@
  * DCL symbols.
  */
 
-/* Copyright (C) 2014-2019 Free Software Foundation, Inc.
+/* Copyright (C) 2014-2020 Free Software Foundation, Inc.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
 terms of the GNU General Public License as published by the Free Software
diff --git a/src/vms_progname.c b/src/vms_progname.c
index 3e45b9fc..95d0521d 100644
--- a/src/vms_progname.c
+++ b/src/vms_progname.c
@@ -36,7 +36,7 @@
  *
  */
 
-/* Copyright (C) 2014-2019 Free Software Foundation, Inc.
+/* Copyright (C) 2014-2020 Free Software Foundation, Inc.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
 terms of the GNU General Public License as published by the Free Software
diff --git a/src/vmsdir.h b/src/vmsdir.h
index 453355fd..686d526a 100644
--- a/src/vmsdir.h
+++ b/src/vmsdir.h
@@ -1,5 +1,5 @@
 /* dirent.h for vms
-Copyright (C) 1996-2019 Free Software Foundation, Inc.
+Copyright (C) 1996-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/vmsfunctions.c b/src/vmsfunctions.c
index e5e4a595..51310da5 100644
--- a/src/vmsfunctions.c
+++ b/src/vmsfunctions.c
@@ -1,5 +1,5 @@
 /* VMS functions
-Copyright (C) 1996-2019 Free Software Foundation, Inc.
+Copyright (C) 1996-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/vmsify.c b/src/vmsify.c
index 6ccf2bb5..3427c7bf 100644
--- a/src/vmsify.c
+++ b/src/vmsify.c
@@ -1,5 +1,5 @@
 /* vmsify.c -- Module for vms <-> unix file name conversion
-Copyright (C) 1996-2019 Free Software Foundation, Inc.
+Copyright (C) 1996-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/vmsjobs.c b/src/vmsjobs.c
index b5052e94..979a209d 100644
--- a/src/vmsjobs.c
+++ b/src/vmsjobs.c
@@ -1,7 +1,7 @@
 /* --------------- Moved here from job.c ---------------
    This file must be #included in job.c, as it accesses static functions.
 
-Copyright (C) 1996-2019 Free Software Foundation, Inc.
+Copyright (C) 1996-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/vpath.c b/src/vpath.c
index d5cacddb..d4e7dc73 100644
--- a/src/vpath.c
+++ b/src/vpath.c
@@ -1,5 +1,5 @@
 /* Implementation of pattern-matching file search paths for GNU Make.
-Copyright (C) 1988-2019 Free Software Foundation, Inc.
+Copyright (C) 1988-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/w32/compat/dirent.c b/src/w32/compat/dirent.c
index 6236ce57..b8ec6152 100644
--- a/src/w32/compat/dirent.c
+++ b/src/w32/compat/dirent.c
@@ -1,5 +1,5 @@
 /* Directory entry code for Window platforms.
-Copyright (C) 1996-2019 Free Software Foundation, Inc.
+Copyright (C) 1996-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/w32/compat/posixfcn.c b/src/w32/compat/posixfcn.c
index 447c0fa4..975dfb73 100644
--- a/src/w32/compat/posixfcn.c
+++ b/src/w32/compat/posixfcn.c
@@ -1,6 +1,6 @@
 /* Replacements for Posix functions and Posix functionality for MS-Windows.
 
-Copyright (C) 2013-2019 Free Software Foundation, Inc.
+Copyright (C) 2013-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/w32/include/dirent.h b/src/w32/include/dirent.h
index a431a200..ae814b31 100644
--- a/src/w32/include/dirent.h
+++ b/src/w32/include/dirent.h
@@ -1,5 +1,5 @@
 /* Windows version of dirent.h
-Copyright (C) 1996-2019 Free Software Foundation, Inc.
+Copyright (C) 1996-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/w32/include/dlfcn.h b/src/w32/include/dlfcn.h
index 64ea2667..00d1d7d9 100644
--- a/src/w32/include/dlfcn.h
+++ b/src/w32/include/dlfcn.h
@@ -1,5 +1,5 @@
 /* dlfcn.h replacement for MS-Windows build.
-Copyright (C) 2013-2019 Free Software Foundation, Inc.
+Copyright (C) 2013-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/w32/include/pathstuff.h b/src/w32/include/pathstuff.h
index d6396e71..63f43251 100644
--- a/src/w32/include/pathstuff.h
+++ b/src/w32/include/pathstuff.h
@@ -1,5 +1,5 @@
 /* Definitions for Windows path manipulation.
-Copyright (C) 1996-2019 Free Software Foundation, Inc.
+Copyright (C) 1996-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/w32/include/sub_proc.h b/src/w32/include/sub_proc.h
index d5154ba8..8ab93532 100644
--- a/src/w32/include/sub_proc.h
+++ b/src/w32/include/sub_proc.h
@@ -1,5 +1,5 @@
 /* Definitions for Windows process invocation.
-Copyright (C) 1996-2019 Free Software Foundation, Inc.
+Copyright (C) 1996-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/w32/include/w32err.h b/src/w32/include/w32err.h
index 7aa21e6e..f3ca50c2 100644
--- a/src/w32/include/w32err.h
+++ b/src/w32/include/w32err.h
@@ -1,5 +1,5 @@
 /* Definitions for Windows error handling.
-Copyright (C) 1996-2019 Free Software Foundation, Inc.
+Copyright (C) 1996-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/w32/pathstuff.c b/src/w32/pathstuff.c
index 1c146065..99b6a3fe 100644
--- a/src/w32/pathstuff.c
+++ b/src/w32/pathstuff.c
@@ -1,5 +1,5 @@
 /* Path conversion for Windows pathnames.
-Copyright (C) 1996-2019 Free Software Foundation, Inc.
+Copyright (C) 1996-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/w32/subproc/misc.c b/src/w32/subproc/misc.c
index 3ea0463d..af5567ce 100644
--- a/src/w32/subproc/misc.c
+++ b/src/w32/subproc/misc.c
@@ -1,5 +1,5 @@
 /* Process handling for Windows
-Copyright (C) 1996-2019 Free Software Foundation, Inc.
+Copyright (C) 1996-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/w32/subproc/proc.h b/src/w32/subproc/proc.h
index ddd42cce..d9f64063 100644
--- a/src/w32/subproc/proc.h
+++ b/src/w32/subproc/proc.h
@@ -1,5 +1,5 @@
 /* Definitions for Windows
-Copyright (C) 1996-2019 Free Software Foundation, Inc.
+Copyright (C) 1996-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/w32/subproc/sub_proc.c b/src/w32/subproc/sub_proc.c
index f502cda2..c0c4f44d 100644
--- a/src/w32/subproc/sub_proc.c
+++ b/src/w32/subproc/sub_proc.c
@@ -1,5 +1,5 @@
 /* Process handling for Windows.
-Copyright (C) 1996-2019 Free Software Foundation, Inc.
+Copyright (C) 1996-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/w32/subproc/w32err.c b/src/w32/subproc/w32err.c
index a32bce12..5ae30435 100644
--- a/src/w32/subproc/w32err.c
+++ b/src/w32/subproc/w32err.c
@@ -1,5 +1,5 @@
 /* Error handling for Windows
-Copyright (C) 1996-2019 Free Software Foundation, Inc.
+Copyright (C) 1996-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/src/w32/w32os.c b/src/w32/w32os.c
index 45817ebe..fe74811f 100644
--- a/src/w32/w32os.c
+++ b/src/w32/w32os.c
@@ -1,5 +1,5 @@
 /* Windows32-based operating system interface for GNU Make.
-Copyright (C) 2016-2019 Free Software Foundation, Inc.
+Copyright (C) 2016-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/tests/NEWS b/tests/NEWS
index e35b25e5..7c9de9e5 100644
--- a/tests/NEWS
+++ b/tests/NEWS
@@ -162,7 +162,7 @@ Changes from 0.1 to 0.2 (5-4-92):
 
 
 -------------------------------------------------------------------------------
-Copyright (C) 1992-2019 Free Software Foundation, Inc.
+Copyright (C) 1992-2020 Free Software Foundation, Inc.
 This file is part of GNU Make.
 
 GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/tests/README b/tests/README
index 0cb7eacb..aab3c353 100644
--- a/tests/README
+++ b/tests/README
@@ -7,7 +7,7 @@ This entire test suite, including all test files, are copyright and
 distributed under the following terms:
 
  -----------------------------------------------------------------------------
- Copyright (C) 1992-2019 Free Software Foundation, Inc.
+ Copyright (C) 1992-2020 Free Software Foundation, Inc.
  This file is part of GNU Make.
 
  GNU Make is free software; you can redistribute it and/or modify it under the
diff --git a/tests/config_flags_pm.com b/tests/config_flags_pm.com
index b91dbf4b..e7da8ca2 100755
--- a/tests/config_flags_pm.com
+++ b/tests/config_flags_pm.com
@@ -3,7 +3,7 @@ $! config_flags_pm.com  - Build config-flags.pm on VMS.
 $!
 $! Just good enough to run the self tests for now.
 $!
-$! Copyright (C) 2014-2019 Free Software Foundation, Inc.
+$! Copyright (C) 2014-2020 Free Software Foundation, Inc.
 $! This file is part of GNU Make.
 $!
 $! GNU Make is free software; you can redistribute it and/or modify it under
diff --git a/tests/mkshadow b/tests/mkshadow
index 10cda378..e7533c83 100755
--- a/tests/mkshadow
+++ b/tests/mkshadow
@@ -3,7 +3,7 @@
 # Simple script to make a "shadow" test directory, using symbolic links.
 # Typically you'd put the shadow in /tmp or another local disk
 #
-# Copyright (C) 1992-2019 Free Software Foundation, Inc.
+# Copyright (C) 1992-2020 Free Software Foundation, Inc.
 # This file is part of GNU Make.
 #
 # GNU Make is free software; you can redistribute it and/or modify it under
diff --git a/tests/run_make_tests.bat b/tests/run_make_tests.bat
index 22d19b08..45ff9308 100644
--- a/tests/run_make_tests.bat
+++ b/tests/run_make_tests.bat
@@ -1,5 +1,5 @@
 @echo off
-rem Copyright (C) 2017-2019 Free Software Foundation, Inc.
+rem Copyright (C) 2017-2020 Free Software Foundation, Inc.
 rem This file is part of GNU Make.
 rem
 rem GNU Make is free software; you can redistribute it and/or modify it under
diff --git a/tests/run_make_tests.com b/tests/run_make_tests.com
index 72567ae7..b7fff554 100755
--- a/tests/run_make_tests.com
+++ b/tests/run_make_tests.com
@@ -4,7 +4,7 @@ $! This is a wrapper for the GNU make perl test programs on VMS.
 $!
 $! Parameter "-help" for description on how to use described below.
 $!
-$! Copyright (C) 2014-2019 Free Software Foundation, Inc.
+$! Copyright (C) 2014-2020 Free Software Foundation, Inc.
 $! This file is part of GNU Make.
 $!
 $! GNU Make is free software; you can redistribute it and/or modify it under
diff --git a/tests/run_make_tests.pl b/tests/run_make_tests.pl
index 6f5d053a..d76e4f3b 100644
--- a/tests/run_make_tests.pl
+++ b/tests/run_make_tests.pl
@@ -11,7 +11,7 @@
 #                         [-make <make prog>]
 #                        (and others)
 
-# Copyright (C) 1992-2019 Free Software Foundation, Inc.
+# Copyright (C) 1992-2020 Free Software Foundation, Inc.
 # This file is part of GNU Make.
 #
 # GNU Make is free software; you can redistribute it and/or modify it under
diff --git a/tests/test_driver.pl b/tests/test_driver.pl
index 96a86e44..49c5c0e4 100644
--- a/tests/test_driver.pl
+++ b/tests/test_driver.pl
@@ -5,7 +5,7 @@
 # Written 91-12-02 through 92-01-01 by Stephen McGee.
 # Modified 92-02-11 through 92-02-22 by Chris Arthur to further generalize.
 #
-# Copyright (C) 1991-2019 Free Software Foundation, Inc.
+# Copyright (C) 1991-2020 Free Software Foundation, Inc.
 # This file is part of GNU Make.
 #
 # GNU Make is free software; you can redistribute it and/or modify it under