diff --git a/python/dolfinx/transfer.py b/python/dolfinx/transfer.py
index 4e2a7670f3b..b98781ac5ed 100644
--- a/python/dolfinx/transfer.py
+++ b/python/dolfinx/transfer.py
@@ -1,3 +1,9 @@
+# Copyright (C) 2024 Paul T. Kühner
+#
+# This file is part of DOLFINx (https://www.fenicsproject.org)
+#
+# SPDX-License-Identifier:    LGPL-3.0-or-later
+
 import numpy as np
 from numpy.typing import NDArray
 
diff --git a/python/test/unit/transfer/test_transfer.py b/python/test/unit/transfer/test_transfer.py
index 93c260442da..618d3be0a5f 100644
--- a/python/test/unit/transfer/test_transfer.py
+++ b/python/test/unit/transfer/test_transfer.py
@@ -1,3 +1,9 @@
+# Copyright (C) 2024 Paul T. Kühner
+#
+# This file is part of DOLFINx (https://www.fenicsproject.org)
+#
+# SPDX-License-Identifier:    LGPL-3.0-or-later
+
 from mpi4py import MPI
 
 import pytest