diff --git a/amd_spi100.c b/amd_spi100.c
index e260bd9..c37ed07 100644
--- a/amd_spi100.c
+++ b/amd_spi100.c
@@ -1,6 +1,8 @@
 /*
  * This file is part of the flashrom project.
  *
+ * Copyright (C) 2023 Nico Huber <nico.h@gmx.de>
+ *
  * 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
  * the Free Software Foundation; either version 2 of the License, or
diff --git a/cli.c b/cli.c
index 49e0c60..b541141 100644
--- a/cli.c
+++ b/cli.c
@@ -1,6 +1,8 @@
 /*
  * This file is part of the flashprog project.
  *
+ * Copyright (C) 2023 Nico Huber <nico.h@gmx.de>
+ *
  * 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
  * the Free Software Foundation; either version 2 of the License, or
diff --git a/cli_config.c b/cli_config.c
index 7fbd310..75c5d94 100644
--- a/cli_config.c
+++ b/cli_config.c
@@ -1,6 +1,8 @@
 /*
  * This file is part of the flashprog project.
  *
+ * Copyright (C) 2023 Nico Huber <nico.h@gmx.de>
+ *
  * 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
  * the Free Software Foundation; either version 2 of the License, or
diff --git a/cli_wp.c b/cli_wp.c
index 429fffa..d6c5ed7 100644
--- a/cli_wp.c
+++ b/cli_wp.c
@@ -1,6 +1,8 @@
 /*
  * This file is part of the flashprog project.
  *
+ * Copyright (C) 2023 Nico Huber <nico.h@gmx.de>
+ *
  * 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
  * the Free Software Foundation; either version 2 of the License, or
diff --git a/include/cli.h b/include/cli.h
index 1fbdef6..1a7dc34 100644
--- a/include/cli.h
+++ b/include/cli.h
@@ -1,6 +1,8 @@
 /*
  * This file is part of the flashprog project.
  *
+ * Copyright (C) 2023 Nico Huber <nico.h@gmx.de>
+ *
  * 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
  * the Free Software Foundation; either version 2 of the License, or
diff --git a/include/spi_command.h b/include/spi_command.h
index 6560f22..4c57d7e 100644
--- a/include/spi_command.h
+++ b/include/spi_command.h
@@ -1,6 +1,8 @@
 /*
  * This file is part of the flashrom project.
  *
+ * Copyright (C) 2024 Nico Huber <nico.h@gmx.de>
+ *
  * 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
  * the Free Software Foundation; either version 2 of the License, or
diff --git a/spi25_prepare.c b/spi25_prepare.c
index 3efc83b..619a8d0 100644
--- a/spi25_prepare.c
+++ b/spi25_prepare.c
@@ -1,6 +1,9 @@
 /*
  * This file is part of the flashprog project.
  *
+ * Copyright (C) 2017, 2018 secunet Security Networks AG
+ * Copyright (C) 2024 Nico Huber <nico.h@gmx.de>
+ *
  * 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
  * the Free Software Foundation; either version 2 of the License, or