diff --git a/cfg_checker/helpers/args_utils.py b/cfg_checker/helpers/args_utils.py
index 0804617..dc1f391 100644
--- a/cfg_checker/helpers/args_utils.py
+++ b/cfg_checker/helpers/args_utils.py
@@ -1,3 +1,5 @@
+#    Author: Alex Savatieiev (osavatieiev@mirantis.com; a.savex@gmail.com)
+#    Copyright 2019-2022 Mirantis, Inc.
 import argparse
 import os
 import sys
diff --git a/cfg_checker/helpers/console_utils.py b/cfg_checker/helpers/console_utils.py
index 0cfdecf..fa770a3 100644
--- a/cfg_checker/helpers/console_utils.py
+++ b/cfg_checker/helpers/console_utils.py
@@ -1,3 +1,5 @@
+#    Author: Alex Savatieiev (osavatieiev@mirantis.com; a.savex@gmail.com)
+#    Copyright 2019-2022 Mirantis, Inc.
 import sys
 
 
diff --git a/cfg_checker/helpers/errors.py b/cfg_checker/helpers/errors.py
index 27ed242..6a0c97b 100644
--- a/cfg_checker/helpers/errors.py
+++ b/cfg_checker/helpers/errors.py
@@ -1,3 +1,5 @@
+#    Author: Alex Savatieiev (osavatieiev@mirantis.com; a.savex@gmail.com)
+#    Copyright 2019-2022 Mirantis, Inc.
 import os
 from configparser import NoSectionError
 
diff --git a/cfg_checker/helpers/tgz.py b/cfg_checker/helpers/tgz.py
index 9ac84f2..23b28bb 100644
--- a/cfg_checker/helpers/tgz.py
+++ b/cfg_checker/helpers/tgz.py
@@ -1,3 +1,5 @@
+#    Author: Alex Savatieiev (osavatieiev@mirantis.com; a.savex@gmail.com)
+#    Copyright 2019-2022 Mirantis, Inc.
 import os
 import tarfile as tarfile
 import tempfile