diff --git a/setup.py b/setup.py
--- a/setup.py
+++ b/setup.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Copyright (C) 2015-2019  The Software Heritage developers
+# Copyright (C) 2015-2022  The Software Heritage developers
 # See the AUTHORS file at the top-level directory of this distribution
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
diff --git a/swh/scheduler/sql/__init__.py b/swh/scheduler/sql/__init__.py
new file mode 100644
diff --git a/swh/scheduler/sql/upgrades/__init__.py b/swh/scheduler/sql/upgrades/__init__.py
new file mode 100644