update copyright to 2021

45 files changed, 45 insertions, 0 deletions

diff --git a/mate-session/gs-idle-monitor.c b/mate-session/gs-idle-monitor.c
index a188af5..375cf5d 100644
--- a/mate-session/gs-idle-monitor.c
+++ b/mate-session/gs-idle-monitor.c
@@ -1,6 +1,7 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
  *
  * Copyright (C) 2008 Red Hat, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/mate-session/gs-idle-monitor.h b/mate-session/gs-idle-monitor.h
index cf4be06..d547d0d 100644
--- a/mate-session/gs-idle-monitor.h
+++ b/mate-session/gs-idle-monitor.h
@@ -1,6 +1,7 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
  *
  * Copyright (C) 2008 Red Hat, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/mate-session/gsm-app.c b/mate-session/gsm-app.c
index 7d693b8..6d7a058 100644
--- a/mate-session/gsm-app.c
+++ b/mate-session/gsm-app.c
@@ -2,6 +2,7 @@
  *
  * Copyright (C) 2007 Novell, Inc.
  * Copyright (C) 2008 Red Hat, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-session/gsm-app.h b/mate-session/gsm-app.h
index af7db2b..96a06d1 100644
--- a/mate-session/gsm-app.h
+++ b/mate-session/gsm-app.h
@@ -2,6 +2,7 @@
  *
  * Copyright (C) 2007 Novell, Inc.
  * Copyright (C) 2008 Red Hat, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-session/gsm-autostart-app.c b/mate-session/gsm-autostart-app.c
index deaa05d..29d66f5 100644
--- a/mate-session/gsm-autostart-app.c
+++ b/mate-session/gsm-autostart-app.c
@@ -2,6 +2,7 @@
  *
  * Copyright (C) 2007 Novell, Inc.
  * Copyright (C) 2008 Red Hat, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-session/gsm-autostart-app.h b/mate-session/gsm-autostart-app.h
index 08237c4..c3a68d1 100644
--- a/mate-session/gsm-autostart-app.h
+++ b/mate-session/gsm-autostart-app.h
@@ -2,6 +2,7 @@
  *
  * Copyright (C) 2007 Novell, Inc.
  * Copyright (C) 2008 Red Hat, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-session/gsm-client.c b/mate-session/gsm-client.c
index 13c6169..87bdd37 100644
--- a/mate-session/gsm-client.c
+++ b/mate-session/gsm-client.c
@@ -2,6 +2,7 @@
  *
  * Copyright (C) 2007 Novell, Inc.
  * Copyright (C) 2008 Red Hat, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-session/gsm-client.h b/mate-session/gsm-client.h
index 0afff15..95e93be 100644
--- a/mate-session/gsm-client.h
+++ b/mate-session/gsm-client.h
@@ -2,6 +2,7 @@
  *
  * Copyright (C) 2007 Novell, Inc.
  * Copyright (C) 2008 Red Hat, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-session/gsm-consolekit.c b/mate-session/gsm-consolekit.c
index 82e04a5..5930269 100644
--- a/mate-session/gsm-consolekit.c
+++ b/mate-session/gsm-consolekit.c
@@ -1,6 +1,7 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
  *
  * Copyright (C) 2008 Jon McCann <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/mate-session/gsm-consolekit.h b/mate-session/gsm-consolekit.h
index ce4a821..c41f92a 100644
--- a/mate-session/gsm-consolekit.h
+++ b/mate-session/gsm-consolekit.h
@@ -1,6 +1,7 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
  *
  * Copyright (C) 2008 Jon McCann <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-session/gsm-dbus-client.c b/mate-session/gsm-dbus-client.c
index eba098c..d6c0ef0 100644
--- a/mate-session/gsm-dbus-client.c
+++ b/mate-session/gsm-dbus-client.c
@@ -1,6 +1,7 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
  *
  * Copyright (C) 2008 Red Hat, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-session/gsm-dbus-client.h b/mate-session/gsm-dbus-client.h
index a1007cc..c264c92 100644
--- a/mate-session/gsm-dbus-client.h
+++ b/mate-session/gsm-dbus-client.h
@@ -1,6 +1,7 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
  *
  * Copyright (C) 2008 Red Hat, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-session/gsm-inhibit-dialog.c b/mate-session/gsm-inhibit-dialog.c
index 89f46e0..73c322c 100644
--- a/mate-session/gsm-inhibit-dialog.c
+++ b/mate-session/gsm-inhibit-dialog.c
@@ -1,6 +1,7 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
  *
  * Copyright (C) 2008 William Jon McCann <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/mate-session/gsm-inhibit-dialog.h b/mate-session/gsm-inhibit-dialog.h
index 89c7121..313b493 100644
--- a/mate-session/gsm-inhibit-dialog.h
+++ b/mate-session/gsm-inhibit-dialog.h
@@ -1,6 +1,7 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
  *
  * Copyright (C) 2008 William Jon McCann <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/mate-session/gsm-inhibitor.c b/mate-session/gsm-inhibitor.c
index 6129ddb..8632c15 100644
--- a/mate-session/gsm-inhibitor.c
+++ b/mate-session/gsm-inhibitor.c
@@ -1,6 +1,7 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
  *
  * Copyright (C) 2008 Red Hat, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-session/gsm-inhibitor.h b/mate-session/gsm-inhibitor.h
index 653f717..a4d20e9 100644
--- a/mate-session/gsm-inhibitor.h
+++ b/mate-session/gsm-inhibitor.h
@@ -1,6 +1,7 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
  *
  * Copyright (C) 2008 Red Hat, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-session/gsm-logout-dialog.c b/mate-session/gsm-logout-dialog.c
index a775283..35f36e2 100644
--- a/mate-session/gsm-logout-dialog.c
+++ b/mate-session/gsm-logout-dialog.c
@@ -2,6 +2,7 @@
  *
  * Copyright (C) 2006 Vincent Untz
  * Copyright (C) 2008 Red Hat, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-session/gsm-logout-dialog.h b/mate-session/gsm-logout-dialog.h
index 2166521..686af38 100644
--- a/mate-session/gsm-logout-dialog.h
+++ b/mate-session/gsm-logout-dialog.h
@@ -1,6 +1,7 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
  *
  * Copyright (C) 2006 Vincent Untz
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-session/gsm-manager.c b/mate-session/gsm-manager.c
index b7ed55b..9b5374e 100644
--- a/mate-session/gsm-manager.c
+++ b/mate-session/gsm-manager.c
@@ -3,6 +3,7 @@
  * Copyright (C) 2007 Novell, Inc.
  * Copyright (C) 2008 Red Hat, Inc.
  * Copyright (C) 2008 William Jon McCann <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/mate-session/gsm-manager.h b/mate-session/gsm-manager.h
index 36575ee..db9743c 100644
--- a/mate-session/gsm-manager.h
+++ b/mate-session/gsm-manager.h
@@ -1,6 +1,7 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
  *
  * Copyright (C) 2008 William Jon McCann <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/mate-session/gsm-presence.c b/mate-session/gsm-presence.c
index 1e1d602..7fc2304 100644
--- a/mate-session/gsm-presence.c
+++ b/mate-session/gsm-presence.c
@@ -1,6 +1,7 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
  *
  * Copyright (C) 2009 Red Hat, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-session/gsm-presence.h b/mate-session/gsm-presence.h
index 36041ff..27d611b 100644
--- a/mate-session/gsm-presence.h
+++ b/mate-session/gsm-presence.h
@@ -1,6 +1,7 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
  *
  * Copyright (C) 2009 Red Hat, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-session/gsm-session-save.c b/mate-session/gsm-session-save.c
index 67d9945..4c88f08 100644
--- a/mate-session/gsm-session-save.c
+++ b/mate-session/gsm-session-save.c
@@ -1,6 +1,7 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
  * gsm-session-save.c
  * Copyright (C) 2008 Lucas Rocha.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-session/gsm-session-save.h b/mate-session/gsm-session-save.h
index 4e0cf47..3d8b837 100644
--- a/mate-session/gsm-session-save.h
+++ b/mate-session/gsm-session-save.h
@@ -1,5 +1,6 @@
 /* gsm-session-save.h
  * Copyright (C) 2008 Lucas Rocha.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-session/gsm-store.c b/mate-session/gsm-store.c
index 67d6520..de13a33 100644
--- a/mate-session/gsm-store.c
+++ b/mate-session/gsm-store.c
@@ -1,6 +1,7 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
  *
  * Copyright (C) 2007-2008 William Jon McCann <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/mate-session/gsm-store.h b/mate-session/gsm-store.h
index 94da2f7..0474f77 100644
--- a/mate-session/gsm-store.h
+++ b/mate-session/gsm-store.h
@@ -1,6 +1,7 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
  *
  * Copyright (C) 2007-2008 William Jon McCann <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/mate-session/gsm-systemd.c b/mate-session/gsm-systemd.c
index 1ef7ddf..b463bbe 100644
--- a/mate-session/gsm-systemd.c
+++ b/mate-session/gsm-systemd.c
@@ -1,5 +1,6 @@
 /*
  * Copyright (C) 2013 Stefano Karapetsas <[email protected]>
+ * Copyright (C) 2013-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/mate-session/gsm-systemd.h b/mate-session/gsm-systemd.h
index 9522709..5ee663b 100644
--- a/mate-session/gsm-systemd.h
+++ b/mate-session/gsm-systemd.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (C) 2013 Stefano Karapetsas
+ * Copyright (C) 2013-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-session/gsm-util.c b/mate-session/gsm-util.c
index 76bf9cd..6799cd0 100644
--- a/mate-session/gsm-util.c
+++ b/mate-session/gsm-util.c
@@ -1,6 +1,7 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
  * gsm-util.c
  * Copyright (C) 2008 Lucas Rocha.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-session/gsm-util.h b/mate-session/gsm-util.h
index d1c3c5c..fc76fef 100644
--- a/mate-session/gsm-util.h
+++ b/mate-session/gsm-util.h
@@ -1,5 +1,6 @@
 /* gsm-util.h
  * Copyright (C) 2008 Lucas Rocha.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-session/gsm-xsmp-client.c b/mate-session/gsm-xsmp-client.c
index 5e15744..8db3390 100644
--- a/mate-session/gsm-xsmp-client.c
+++ b/mate-session/gsm-xsmp-client.c
@@ -2,6 +2,7 @@
  *
  * Copyright (C) 2007 Novell, Inc.
  * Copyright (C) 2008 Red Hat, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-session/gsm-xsmp-client.h b/mate-session/gsm-xsmp-client.h
index d080948..c9ec9b8 100644
--- a/mate-session/gsm-xsmp-client.h
+++ b/mate-session/gsm-xsmp-client.h
@@ -1,6 +1,7 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
  *
  * Copyright (C) 2007 Novell, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-session/gsm-xsmp-server.c b/mate-session/gsm-xsmp-server.c
index 10eb434..b908fb7 100644
--- a/mate-session/gsm-xsmp-server.c
+++ b/mate-session/gsm-xsmp-server.c
@@ -3,6 +3,7 @@
  * Copyright (C) 2007 Novell, Inc.
  * Copyright (C) 2008 Red Hat, Inc.
  * Copyright (C) 2008 William Jon McCann <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/mate-session/gsm-xsmp-server.h b/mate-session/gsm-xsmp-server.h
index 29f72db..a82bc17 100644
--- a/mate-session/gsm-xsmp-server.h
+++ b/mate-session/gsm-xsmp-server.h
@@ -1,6 +1,7 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
  *
  * Copyright (C) 2008 William Jon McCann <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/mate-session/main.c b/mate-session/main.c
index 25fe52d..96c1092 100644
--- a/mate-session/main.c
+++ b/mate-session/main.c
@@ -2,6 +2,7 @@
  *
  * Copyright (C) 2006 Novell, Inc.
  * Copyright (C) 2008 Red Hat, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-session/mdm-log.c b/mate-session/mdm-log.c
index 021060d..7195d74 100644
--- a/mate-session/mdm-log.c
+++ b/mate-session/mdm-log.c
@@ -1,6 +1,7 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
  *
  * Copyright (C) 2007 William Jon McCann <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/mate-session/mdm-log.h b/mate-session/mdm-log.h
index 9e78449..eee6c29 100644
--- a/mate-session/mdm-log.h
+++ b/mate-session/mdm-log.h
@@ -1,6 +1,7 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
  *
  * Copyright (C) 2007 William Jon McCann <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/mate-session/mdm-signal-handler.c b/mate-session/mdm-signal-handler.c
index 56287b2..b2b00ac 100644
--- a/mate-session/mdm-signal-handler.c
+++ b/mate-session/mdm-signal-handler.c
@@ -2,6 +2,7 @@
  *
  * Copyright (C) 2006 Red Hat, Inc.
  * Copyright (C) 2007 William Jon McCann <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/mate-session/mdm-signal-handler.h b/mate-session/mdm-signal-handler.h
index dd4dc04..6fca4f7 100644
--- a/mate-session/mdm-signal-handler.h
+++ b/mate-session/mdm-signal-handler.h
@@ -1,6 +1,7 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
  *
  * Copyright (C) 2007 William Jon McCann <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/mate-session/mdm.c b/mate-session/mdm.c
index 2e0e712..cef3755 100644
--- a/mate-session/mdm.c
+++ b/mate-session/mdm.c
@@ -4,6 +4,7 @@
  * Copyright (C) 2005 Red Hat, Inc.
  * Copyright (C) 2002, 2003 George Lebl
  * Copyright (C) 2001 Queen of England,
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-session/mdm.h b/mate-session/mdm.h
index 4eec264..5f7eed8 100644
--- a/mate-session/mdm.h
+++ b/mate-session/mdm.h
@@ -3,6 +3,7 @@
  * Copyright (C) 2005 Red Hat, Inc.
  * Copyright (C) 2002, 2003 George Lebl
  * Copyright (C) 2001 Queen of England,
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-session/msm-gnome.c b/mate-session/msm-gnome.c
index b43f1ad..db5a153 100644
--- a/mate-session/msm-gnome.c
+++ b/mate-session/msm-gnome.c
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2004-2005 Benedikt Meurer <[email protected]>
  *               2013 Stefano Karapetsas <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/mate-session/msm-gnome.h b/mate-session/msm-gnome.h
index e3c2e60..b658ba2 100644
--- a/mate-session/msm-gnome.h
+++ b/mate-session/msm-gnome.h
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2004 Benedikt Meurer <[email protected]>
  *               2013 Stefano Karapetsas <[email protected]>
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
diff --git a/mate-session/test-client-dbus.c b/mate-session/test-client-dbus.c
index ccb40b1..6b3afc5 100644
--- a/mate-session/test-client-dbus.c
+++ b/mate-session/test-client-dbus.c
@@ -1,6 +1,7 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
  *
  * Copyright (C) 2008 Red Hat, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
diff --git a/mate-session/test-inhibit.c b/mate-session/test-inhibit.c
index 7207cb9..8c9f694 100644
--- a/mate-session/test-inhibit.c
+++ b/mate-session/test-inhibit.c
@@ -1,6 +1,7 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
  *
  * Copyright (C) 2008 Red Hat, Inc.
+ * Copyright (C) 2012-2021 MATE Developers
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as