diff --git a/.gitlab-page.sh b/.gitlab-page.sh
index 2cc34ad8..41017634 100755
--- a/.gitlab-page.sh
+++ b/.gitlab-page.sh
@@ -70,7 +70,7 @@ echo "<li>Bug tracker : <a href=\"https://pulkomandy.tk/projects/GrafX2/query\">
 echo "<li>Open Hub : <a href=\"https://www.openhub.net/p/grafx2\">https://www.openhub.net/p/grafx2</a></li>" >> ${OUTFILE}
 echo "</ul>" >> ${OUTFILE}
 echo "<p>Copyright (C)1996-2001 Sunset Design (G.Dorme & K.Maritaud)<br>" >> ${OUTFILE}
-echo "Copyright (C)2007-2022 the Grafx2 Project Team (A.Destugues & Y.Rizoud & T.Bernard)</p>" >> ${OUTFILE}
+echo "Copyright (C)2007-2023 the Grafx2 Project Team (A.Destugues & Y.Rizoud & T.Bernard)</p>" >> ${OUTFILE}
 echo "</body>" >> ${OUTFILE}
 echo "</html>" >> ${OUTFILE}
 
diff --git a/doc/README.txt b/doc/README.txt
index e828e248..848c93ba 100644
--- a/doc/README.txt
+++ b/doc/README.txt
@@ -6,7 +6,7 @@ _/    _/  _/        _/    _/    _/        _/  _/      _/
 
 GrafX2 - The Ultimate 256-color bitmap paint program
 Copyright (C)1996-2001 Sunset Design (G.Dorme & K.Maritaud)
-Copyright (C)2007-2022 the Grafx2 Project Team (A.Destugues & Y.Rizoud
+Copyright (C)2007-2023 the Grafx2 Project Team (A.Destugues & Y.Rizoud
                                                 & T.Bernard)
 -------------------------------------
 
diff --git a/src/buttons.c b/src/buttons.c
index cfd54bd1..fff9839a 100644
--- a/src/buttons.c
+++ b/src/buttons.c
@@ -160,7 +160,7 @@ void Button_Message_initial(void)
     for (x=14,x_pos=0; x_pos<231; x_pos++,x++)
       Pixel_in_window(x,y,Gfx->Logo_grafx2[offs_y+x_pos]);
 
-  Print_in_window(130-4*26,88,"Copyright (c) 2007-2022 by",MC_Dark,MC_Light);
+  Print_in_window(130-4*26,88,"Copyright (c) 2007-2023 by",MC_Dark,MC_Light);
   Print_in_window(130-4*23,100,"the Grafx2 project team",MC_Black,MC_Light);
   Print_in_window(130-4*26,112,"Copyright (c) 1996-2001 by",MC_Dark,MC_Light);
   Print_in_window(130-4*13,122,"Sunset Design",MC_Black,MC_Light);
diff --git a/src/gfx2.rc b/src/gfx2.rc
index 8ffaa0c3..03efcf6d 100644
--- a/src/gfx2.rc
+++ b/src/gfx2.rc
@@ -25,7 +25,7 @@ BEGIN
       VALUE "FileDescription", "The ultimate 256-color painting programm"
       VALUE "FileVersion", "2.8.3091"
       VALUE "InternalName", "grafx2"
-      VALUE "LegalCopyright", "(c) 2007-2022 The GrafX2 Team, (c) 1996-2001 Sunset Design"
+      VALUE "LegalCopyright", "(c) 2007-2023 The GrafX2 Team, (c) 1996-2001 Sunset Design"
       VALUE "OriginalFilename", "grafx2.exe"
       VALUE "ProductName", "GrafX2"
       VALUE "ProductVersion", "2.8.3091"
diff --git a/src/helpfile.h b/src/helpfile.h
index b4e6d180..6aa8778d 100644
--- a/src/helpfile.h
+++ b/src/helpfile.h
@@ -62,7 +62,7 @@ static const T_Help_table helptable_about[] =
   HELP_TEXT ("")
   HELP_TEXT ("               http://grafx2.tk")
   HELP_TEXT ("")
-  HELP_TEXT ("Copyright 2007-2022, the Grafx2 project team")
+  HELP_TEXT ("Copyright 2007-2023, the Grafx2 project team")
   HELP_TEXT ("          1996-2001, SUNSET DESIGN")
 };
 static const T_Help_table helptable_licence[] =