diff --git a/xorriso/opts_p_z.c b/xorriso/opts_p_z.c
index 4ad27116..c410afdb 100644
--- a/xorriso/opts_p_z.c
+++ b/xorriso/opts_p_z.c
@@ -1,7 +1,7 @@
 
 /* xorriso - creates, loads, manipulates and burns ISO 9660 filesystem images.
 
-   Copyright 2007-2021 Thomas Schmitt, <scdbackup@gmx.net>
+   Copyright 2007-2023 Thomas Schmitt, <scdbackup@gmx.net>
 
    Provided under GPL version 2 or later.
 
@@ -2029,7 +2029,7 @@ int Xorriso_option_version(struct XorrisO *xorriso, int flag)
  sprintf(xorriso->result_line,
 "ISO 9660 Rock Ridge filesystem manipulator and CD/DVD/BD burn program\n");
  sprintf(xorriso->result_line+strlen(xorriso->result_line),
-"Copyright (C) 2021, Thomas Schmitt <scdbackup@gmx.net>, libburnia project.\n");
+"Copyright (C) 2023, Thomas Schmitt <scdbackup@gmx.net>, libburnia project.\n");
  Xorriso_result(xorriso, 0);
  sprintf(xorriso->result_line,
          "xorriso version   :  %d.%d.%d%s\n",
diff --git a/xorriso/xorriso_timestamp.h b/xorriso/xorriso_timestamp.h
index 53617fd3..c9363caf 100644
--- a/xorriso/xorriso_timestamp.h
+++ b/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2023.01.22.152059"
+#define Xorriso_timestamP "2023.01.22.152155"