diff --git a/accounting/storage/sql/models.py b/accounting/storage/sql/models.py
index 72dfab942b47b46c37b1a30adf93d3106f496c26..dbeae959b8aa234186ce2b96c44fdae9f92aa8e1 100644
--- a/accounting/storage/sql/models.py
+++ b/accounting/storage/sql/models.py
@@ -1,3 +1,7 @@
+# Part of accounting-api project:
+# https://gitorious.org/conservancy/accounting-api
+# License: AGPLv3-or-later
+
 import json
 
 from . import db