diff --git a/normalizer/normalizer-repo-tags/calculate_repo_tags.py b/normalizer/normalizer-repo-tags/calculate_repo_tags.py
index 45ee6e7d3e8dca7ab06ed79acd57f70c087e304e..068b8addb667cc6a1ea69a6a538269edbd619820 100644
--- a/normalizer/normalizer-repo-tags/calculate_repo_tags.py
+++ b/normalizer/normalizer-repo-tags/calculate_repo_tags.py
@@ -1,3 +1,17 @@
+# Copyright 2017-2018 Jungho Shin, Fawzi Mohamed
+# 
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+# 
+#   http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 import setup_paths
 import json
 import os.path, sys, subprocess
diff --git a/normalizer/normalizer-repo-tags/extract_from_repo.py b/normalizer/normalizer-repo-tags/extract_from_repo.py
index 5293e2ab5d318ac9032eba4e47218f45a6da00fb..b730022402c640a5420bd0bfa59a71cc9f8267d4 100644
--- a/normalizer/normalizer-repo-tags/extract_from_repo.py
+++ b/normalizer/normalizer-repo-tags/extract_from_repo.py
@@ -1,3 +1,17 @@
+# Copyright 2017-2018 Jungho Shin, Fawzi Mohamed
+# 
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+# 
+#   http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 import os, sys, json, zipfile
 base_path= sys.exec_prefix + '/python'
 sys.path.insert(0, base_path)
diff --git a/normalizer/normalizer-repo-tags/setup_paths.py b/normalizer/normalizer-repo-tags/setup_paths.py
index e0a0fb009256a0d4056e81c12e82d15bfd3ea7c4..ff0677d1318655eeea7ebb55688f301831322814 100644
--- a/normalizer/normalizer-repo-tags/setup_paths.py
+++ b/normalizer/normalizer-repo-tags/setup_paths.py
@@ -1,3 +1,17 @@
+# Copyright 2017-2018 Jungho Shin, Fawzi Mohamed
+# 
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+# 
+#   http://www.apache.org/licenses/LICENSE-2.0
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 import sys, os, os.path
 baseDir = os.path.dirname(os.path.abspath(__file__))
 commonDir = os.path.normpath(os.path.join(baseDir,"../../../../python-common/common/python"))