diff --git a/lib/testutil-0getgroups.c b/lib/testutil-0getgroups.c
index 669bc865..8786a1be 100644
--- a/lib/testutil-0getgroups.c
+++ b/lib/testutil-0getgroups.c
@@ -1,11 +1,11 @@
 /*************************************************************************
  *
  * TESTUTIL-GETGROUPS.C, Superseded getgroups function for test purpose
- * Copyright (C) 2020 Xavier Delaruelle
+ * Copyright (C) 2020-2021 Xavier Delaruelle
  *
  * 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 3 of the License, or
+ * the Free Software Foundation, either version 2 of the License, or
  * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
diff --git a/lib/testutil-closedir.c b/lib/testutil-closedir.c
index 78c25b84..0a6e3374 100644
--- a/lib/testutil-closedir.c
+++ b/lib/testutil-closedir.c
@@ -1,11 +1,11 @@
 /*************************************************************************
  *
  * TESTUTIL-CLOSEDIR.C, Superseded closedir function for test purpose
- * Copyright (C) 2019 Xavier Delaruelle
+ * Copyright (C) 2019-2021 Xavier Delaruelle
  *
  * 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 3 of the License, or
+ * the Free Software Foundation, either version 2 of the License, or
  * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
diff --git a/lib/testutil-dupgetgroups.c b/lib/testutil-dupgetgroups.c
index 3b464163..cb7c9412 100644
--- a/lib/testutil-dupgetgroups.c
+++ b/lib/testutil-dupgetgroups.c
@@ -1,11 +1,11 @@
 /*************************************************************************
  *
  * TESTUTIL-DUPGETGROUPS.C, Superseded getgroups function for test purpose
- * Copyright (C) 2020 Xavier Delaruelle
+ * Copyright (C) 2020-2021 Xavier Delaruelle
  *
  * 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 3 of the License, or
+ * the Free Software Foundation, either version 2 of the License, or
  * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
diff --git a/lib/testutil-getgrgid.c b/lib/testutil-getgrgid.c
index a5b9cc46..52c57907 100644
--- a/lib/testutil-getgrgid.c
+++ b/lib/testutil-getgrgid.c
@@ -1,11 +1,11 @@
 /*************************************************************************
  *
  * TESTUTIL-GETGRGID.C, Superseded getgrgid function for test purpose
- * Copyright (C) 2020 Xavier Delaruelle
+ * Copyright (C) 2020-2021 Xavier Delaruelle
  *
  * 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 3 of the License, or
+ * the Free Software Foundation, either version 2 of the License, or
  * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
diff --git a/lib/testutil-getgroups.c b/lib/testutil-getgroups.c
index e82fb9a5..ee5acadb 100644
--- a/lib/testutil-getgroups.c
+++ b/lib/testutil-getgroups.c
@@ -1,11 +1,11 @@
 /*************************************************************************
  *
  * TESTUTIL-GETGROUPS.C, Superseded getgroups function for test purpose
- * Copyright (C) 2020 Xavier Delaruelle
+ * Copyright (C) 2020-2021 Xavier Delaruelle
  *
  * 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 3 of the License, or
+ * the Free Software Foundation, either version 2 of the License, or
  * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
diff --git a/lib/testutil-getpwuid.c b/lib/testutil-getpwuid.c
index 122f3236..9a7522f7 100644
--- a/lib/testutil-getpwuid.c
+++ b/lib/testutil-getpwuid.c
@@ -1,11 +1,11 @@
 /*************************************************************************
  *
  * TESTUTIL-GETPWUID.C, Superseded getpwuid function for test purpose
- * Copyright (C) 2020 Xavier Delaruelle
+ * Copyright (C) 2020-2021 Xavier Delaruelle
  *
  * 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 3 of the License, or
+ * the Free Software Foundation, either version 2 of the License, or
  * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
diff --git a/lib/testutil-mktime.c b/lib/testutil-mktime.c
index 030920c3..2cc83605 100644
--- a/lib/testutil-mktime.c
+++ b/lib/testutil-mktime.c
@@ -1,11 +1,11 @@
 /*************************************************************************
  *
  * TESTUTIL-MKTIME.C, Superseded mktime function for test purpose
- * Copyright (C) 2020 Xavier Delaruelle
+ * Copyright (C) 2020-2021 Xavier Delaruelle
  *
  * 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 3 of the License, or
+ * the Free Software Foundation, either version 2 of the License, or
  * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
diff --git a/lib/testutil-time.c b/lib/testutil-time.c
index d4a3e3f9..f76d04f1 100644
--- a/lib/testutil-time.c
+++ b/lib/testutil-time.c
@@ -1,11 +1,11 @@
 /*************************************************************************
  *
  * TESTUTIL-TIME.C, Superseded time function for test purpose
- * Copyright (C) 2020 Xavier Delaruelle
+ * Copyright (C) 2020-2021 Xavier Delaruelle
  *
  * 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 3 of the License, or
+ * the Free Software Foundation, either version 2 of the License, or
  * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,