diff --git a/accounting/client.py b/accounting/client.py
index 361a00afa765354d8f70385e8904eafca1a5a31f..9c60c8e456d95d0944543282ebb9b572ffc0a874 100644
--- a/accounting/client.py
+++ b/accounting/client.py
@@ -1,3 +1,7 @@
+# Part of accounting-api project:
+# https://gitorious.org/conservancy/accounting-api
+# License: AGPLv3-or-later
+
 import sys
 import argparse
 import json