diff --git a/unit_test/tstHertz.hpp b/unit_test/tstHertz.hpp
index 0d194d9..46a5aa1 100644
--- a/unit_test/tstHertz.hpp
+++ b/unit_test/tstHertz.hpp
@@ -1,3 +1,14 @@
+/****************************************************************************
+ * Copyright (c) 2022 by Oak Ridge National Laboratory                      *
+ * All rights reserved.                                                     *
+ *                                                                          *
+ * This file is part of CabanaPD. CabanaPD is distributed under a           *
+ * BSD 3-clause license. For the licensing terms see the LICENSE file in    *
+ * the top-level directory.                                                 *
+ *                                                                          *
+ * SPDX-License-Identifier: BSD-3-Clause                                    *
+ ****************************************************************************/
+
 #include <CabanaPD.hpp>
 
 #include <Kokkos_Core.hpp>