diff --git a/poky/meta/lib/oe/manifest.py b/poky/meta/lib/oe/manifest.py
index 674303c..f7c88f9 100644
--- a/poky/meta/lib/oe/manifest.py
+++ b/poky/meta/lib/oe/manifest.py
@@ -1,3 +1,7 @@
+#
+# SPDX-License-Identifier: GPL-2.0-only
+#
+
 from abc import ABCMeta, abstractmethod
 import os
 import re