diff --git a/extras/align_right/Mmakefile b/extras/align_right/Mmakefile
index c7bdc3ba0..1e831beba 100644
--- a/extras/align_right/Mmakefile
+++ b/extras/align_right/Mmakefile
@@ -1,7 +1,7 @@
 #-----------------------------------------------------------------------------#
 # vim: ts=8 sw=8 noexpandtab ft=make
 #-----------------------------------------------------------------------------#
-# Copyright (C) 2016, 2018, 2025 The Mercury team.
+# Copyright (C) 2016, 2018, 2024-2025 The Mercury team.
 # This file is distributed under the terms specified in COPYING.LIB.
 #-----------------------------------------------------------------------------#
 
diff --git a/extras/base64/Mmakefile b/extras/base64/Mmakefile
index c2e49433b..d3f9dc79b 100644
--- a/extras/base64/Mmakefile
+++ b/extras/base64/Mmakefile
@@ -2,7 +2,7 @@
 # vim: ts=8 sw=8 noexpandtab ft=make
 #-----------------------------------------------------------------------------#
 # Copyright (C) 2011 The University of Melbourne.
-# Copyright (C) 2015, 2018, 2025 The Mercury team.
+# Copyright (C) 2015, 2018-2019, 2024-2025 The Mercury team.
 # This file is distributed under the terms specified in COPYING.LIB.
 #-----------------------------------------------------------------------------#
 
diff --git a/extras/dynamic_linking/Mmakefile b/extras/dynamic_linking/Mmakefile
index ce59baa8a..12f5df98a 100644
--- a/extras/dynamic_linking/Mmakefile
+++ b/extras/dynamic_linking/Mmakefile
@@ -2,7 +2,7 @@
 # vim: ts=8 sw=8 noexpandtab ft=make
 #-----------------------------------------------------------------------------#
 # Copyright (C) 2000-2005 The University of Melbourne.
-# Copyright (C) 2015-2016, 2018, 2025 The Mercury team.
+# Copyright (C) 2015-2016, 2018, 2024-2025 The Mercury team.
 # This file is distributed under the terms specified in COPYING.LIB.
 #-----------------------------------------------------------------------------#
 
diff --git a/extras/error/Mmakefile b/extras/error/Mmakefile
index 62a958157..88d358b99 100644
--- a/extras/error/Mmakefile
+++ b/extras/error/Mmakefile
@@ -2,7 +2,7 @@
 # vim: ts=8 sw=8 noexpandtab ft=make
 #-----------------------------------------------------------------------------#
 # Copyright (C) 2000, 2003, 2008 The University of Melbourne.
-# Copyright (C) 2015, 2018, 2025 The Mercury team.
+# Copyright (C) 2015, 2018, 2024-2025 The Mercury team.
 # This file is distributed under the terms specified in COPYING.LIB.
 #-----------------------------------------------------------------------------#
 
diff --git a/extras/fixed/Mmakefile b/extras/fixed/Mmakefile
index fa97e249c..1a69c3426 100644
--- a/extras/fixed/Mmakefile
+++ b/extras/fixed/Mmakefile
@@ -2,7 +2,7 @@
 # vim: ts=8 sw=8 noexpandtab ft=make
 #-----------------------------------------------------------------------------#
 # Copyright (C) 2011 The University of Melbourne.
-# Copyright (C) 2015, 2018, 2025 The Mercury team.
+# Copyright (C) 2015, 2018, 2024-2025 The Mercury team.
 # This file is distributed under the terms specified in COPYING.LIB.
 #-----------------------------------------------------------------------------#
 
diff --git a/extras/monte/Mmakefile b/extras/monte/Mmakefile
index 2812e289c..6a1491876 100644
--- a/extras/monte/Mmakefile
+++ b/extras/monte/Mmakefile
@@ -2,7 +2,7 @@
 # vim: ts=8 sw=8 noexpandtab ft=make
 #-----------------------------------------------------------------------------#
 # Copyright (C) 2010 The University of Melbourne.
-# Copyright (C) 2015, 2018, 2025 The Mercury team.
+# Copyright (C) 2015, 2018, 2024-2025 The Mercury team.
 # This file is distributed under the terms specified in COPYING.LIB.
 #-----------------------------------------------------------------------------#
 
diff --git a/extras/moose/Mmakefile b/extras/moose/Mmakefile
index 140604cfe..2ab1b2116 100644
--- a/extras/moose/Mmakefile
+++ b/extras/moose/Mmakefile
@@ -2,7 +2,7 @@
 # vim: ts=8 sw=8 noexpandtab ft=make
 #-----------------------------------------------------------------------------#
 # Copyright (C) 2000, 2002-2003 The University of Melbourne.
-# Copyright (C) 2015, 2018, 2025 The Mercury team.
+# Copyright (C) 2015, 2018, 2020, 2025 The Mercury team.
 # This file is distributed under the terms specified in COPYING.LIB.
 #-----------------------------------------------------------------------------#
 
diff --git a/extras/posix/Mmakefile b/extras/posix/Mmakefile
index e20ba310c..847908c0c 100644
--- a/extras/posix/Mmakefile
+++ b/extras/posix/Mmakefile
@@ -2,7 +2,7 @@
 # vim: ts=8 sw=8 noexpandtab ft=make
 #-----------------------------------------------------------------------------#
 # Copyright (C) 2000, 2002-2004 The University of Melbourne.
-# Copyright (C) 2015, 2018, 2025 The Mercury team.
+# Copyright (C) 2015, 2018-2019, 2024-2025 The Mercury team.
 # This file is distributed under the terms specified in COPYING.LIB.
 #-----------------------------------------------------------------------------#
 
diff --git a/extras/show_ops/Mmakefile b/extras/show_ops/Mmakefile
index c7ad380f4..7c3d53137 100644
--- a/extras/show_ops/Mmakefile
+++ b/extras/show_ops/Mmakefile
@@ -1,7 +1,7 @@
 #-----------------------------------------------------------------------------#
 # vim: ts=8 sw=8 noexpandtab ft=make
 #-----------------------------------------------------------------------------#
-# Copyright (C) 2015, 2018, 2025 The Mercury team.
+# Copyright (C) 2015, 2018, 2022, 2025 The Mercury team.
 # This file is distributed under the terms specified in COPYING.LIB.
 #-----------------------------------------------------------------------------#
 
diff --git a/extras/split_file/Mmakefile b/extras/split_file/Mmakefile
index 7c9dd6a93..95e28d763 100644
--- a/extras/split_file/Mmakefile
+++ b/extras/split_file/Mmakefile
@@ -1,7 +1,7 @@
 #-----------------------------------------------------------------------------#
 # vim: ts=8 sw=8 noexpandtab ft=make
 #-----------------------------------------------------------------------------#
-# Copyright (C) 2020, 2025 The Mercury team.
+# Copyright (C) 2020, 2024-2025 The Mercury team.
 # This file is distributed under the terms specified in COPYING.LIB.
 #-----------------------------------------------------------------------------#
 
diff --git a/extras/xml/Mmakefile b/extras/xml/Mmakefile
index 9c927d318..c0938fa95 100644
--- a/extras/xml/Mmakefile
+++ b/extras/xml/Mmakefile
@@ -2,7 +2,7 @@
 # vim: ts=8 sw=8 noexpandtab ft=make
 #-----------------------------------------------------------------------------#
 # Copyright (C) 2000, 2002 The University of Melbourne.
-# Copyright (C) 2015, 2018, 2025 The Mercury team.
+# Copyright (C) 2015, 2018, 2022, 2025 The Mercury team.
 # This file is distributed under the terms specified in COPYING.LIB.
 #-----------------------------------------------------------------------------#