diff --git a/src/main/scala/eu/nomad_lab/parsers/GaussianParser.scala b/src/main/scala/eu/nomad_lab/parsers/GaussianParser.scala
index 3e60e601c37b24e63acdb4f8f442b2661403fac9..59a699414b4c1634d780e727d295dc0bc0e9a467 100644
--- a/src/main/scala/eu/nomad_lab/parsers/GaussianParser.scala
+++ b/src/main/scala/eu/nomad_lab/parsers/GaussianParser.scala
@@ -1,3 +1,18 @@
+/*
+   Copyright 2016-2017 The NOMAD Developers Group
+
+   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.
+ */
 package eu.nomad_lab.parsers
 
 import eu.{ nomad_lab => lab }
diff --git a/src/test/scala/eu/nomad_lab/parsers/GaussianParserSpec.scala b/src/test/scala/eu/nomad_lab/parsers/GaussianParserSpec.scala
index 98f1d24ff95a6781fa535723b238d1988412bc31..52a2e8562ad40203c26239c5d6480ef5c2c0db0c 100644
--- a/src/test/scala/eu/nomad_lab/parsers/GaussianParserSpec.scala
+++ b/src/test/scala/eu/nomad_lab/parsers/GaussianParserSpec.scala
@@ -1,3 +1,18 @@
+/*
+   Copyright 2016-2017 The NOMAD Developers Group
+
+   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.
+ */
 package eu.nomad_lab.parsers
 
 import eu.nomad_lab.{ parsers, DefaultPythonInterpreter }