diff --git a/MaterialLib/MPL/Properties/IdealGasLaw.cpp b/MaterialLib/MPL/Properties/IdealGasLaw.cpp
index baab631203d446004013aea1cc6dbe44289b26bf..29f1ccf1ba26cc88f3220022f5775db33320bdee 100644
--- a/MaterialLib/MPL/Properties/IdealGasLaw.cpp
+++ b/MaterialLib/MPL/Properties/IdealGasLaw.cpp
@@ -4,7 +4,7 @@
  * \brief
  *
  * \copyright
- * Copyright (c) 2012-2018, OpenGeoSys Community (http://www.opengeosys.org)
+ * Copyright (c) 2012-2019, OpenGeoSys Community (http://www.opengeosys.org)
  *            Distributed under a Modified BSD License.
  *              See accompanying file LICENSE.txt or
  *              http://www.opengeosys.org/project/license
diff --git a/MaterialLib/MPL/Properties/IdealGasLaw.h b/MaterialLib/MPL/Properties/IdealGasLaw.h
index 9c0b636a7e86b4ad2256e345aa889f3a616daeac..69b35cba6556486c9d8495fb79c1ecbac5d55215 100644
--- a/MaterialLib/MPL/Properties/IdealGasLaw.h
+++ b/MaterialLib/MPL/Properties/IdealGasLaw.h
@@ -4,7 +4,7 @@
  * \brief
  *
  * \copyright
- * Copyright (c) 2012-2018, OpenGeoSys Community (http://www.opengeosys.org)
+ * Copyright (c) 2012-2019, OpenGeoSys Community (http://www.opengeosys.org)
  *            Distributed under a Modified BSD License.
  *              See accompanying file LICENSE.txt or
  *              http://www.opengeosys.org/project/license