diff --git a/accounting/web.py b/accounting/web.py
index f8dc7756d788a43a110e619763ee5ef83c182060..60564e09fcddc441133468b024bb86cc54ee6c73 100644
--- a/accounting/web.py
+++ b/accounting/web.py
@@ -1,3 +1,7 @@
+# Part of accounting-api project:
+# https://gitorious.org/conservancy/accounting-api
+# License: AGPLv3-or-later
+
 '''
 This module contains the high-level webservice logic such as the Flask setup
 and the Flask endpoints.