diff --git a/architecture.rst b/architecture.rst
index 16b83a1..f44a264 100644
--- a/architecture.rst
+++ b/architecture.rst
@@ -1,3 +1,6 @@
+.. SPDX-FileCopyrightText: 2021 Open Networking Foundation <info@opennetworking.org>
+.. SPDX-License-Identifier: Apache-2.0
+
 .. _architecture_design:
 
 Architecture and Design