diff --git a/scrub_mtl_class.py b/scrub_mtl_class.py
index 047971f..31c3a7c 100644
--- a/scrub_mtl_class.py
+++ b/scrub_mtl_class.py
@@ -1,3 +1,10 @@
+"""
+ScrubMTL module
+SPDX - License - Identifier: LGPL - 3.0
+Copyright © 2022 Concordia CERC group
+Project Developer: alireza.adli@concordia.ca
+"""
+
 from scrub_layer_class import *
 from basic_functions import *