diff --git a/poky/bitbake/lib/bb/exceptions.py b/poky/bitbake/lib/bb/exceptions.py
index cd71343..ecbad59 100644
--- a/poky/bitbake/lib/bb/exceptions.py
+++ b/poky/bitbake/lib/bb/exceptions.py
@@ -1,3 +1,6 @@
+#
+# SPDX-License-Identifier: GPL-2.0-only
+#
 
 import inspect
 import traceback