diff --git a/src/dbus_singleton.cpp b/src/dbus_singleton.cpp
index 0c937d1..a2bde4d 100644
--- a/src/dbus_singleton.cpp
+++ b/src/dbus_singleton.cpp
@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-FileCopyrightText: Copyright OpenBMC Authors
 #include "dbus_singleton.hpp"
 
 #include <sdbusplus/asio/connection.hpp>