diff --git a/nvflare/app_opt/xgboost/histogram_based_v2/__init__.py b/nvflare/app_opt/xgboost/histogram_based_v2/__init__.py
index f07674a89f..4091c8af98 100644
--- a/nvflare/app_opt/xgboost/histogram_based_v2/__init__.py
+++ b/nvflare/app_opt/xgboost/histogram_based_v2/__init__.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2023, NVIDIA CORPORATION.  All rights reserved.
+# Copyright (c) 2024, NVIDIA CORPORATION.  All rights reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/nvflare/app_opt/xgboost/histogram_based_v2/mock_he/__init__.py b/nvflare/app_opt/xgboost/histogram_based_v2/mock_he/__init__.py
index e69de29bb2..d9155f923f 100644
--- a/nvflare/app_opt/xgboost/histogram_based_v2/mock_he/__init__.py
+++ b/nvflare/app_opt/xgboost/histogram_based_v2/mock_he/__init__.py
@@ -0,0 +1,13 @@
+# Copyright (c) 2024, NVIDIA CORPORATION.  All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
diff --git a/nvflare/app_opt/xgboost/histogram_based_v2/proto/federated_pb2.py b/nvflare/app_opt/xgboost/histogram_based_v2/proto/federated_pb2.py
index 45095b265e..6c77fc334e 100644
--- a/nvflare/app_opt/xgboost/histogram_based_v2/proto/federated_pb2.py
+++ b/nvflare/app_opt/xgboost/histogram_based_v2/proto/federated_pb2.py
@@ -1,3 +1,17 @@
+# Copyright (c) 2024, NVIDIA CORPORATION.  All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 # -*- coding: utf-8 -*-
 # Generated by the protocol buffer compiler.  DO NOT EDIT!
 # source: federated.proto
diff --git a/nvflare/app_opt/xgboost/histogram_based_v2/proto/federated_pb2_grpc.py b/nvflare/app_opt/xgboost/histogram_based_v2/proto/federated_pb2_grpc.py
index 5439018820..36bbbbea0c 100644
--- a/nvflare/app_opt/xgboost/histogram_based_v2/proto/federated_pb2_grpc.py
+++ b/nvflare/app_opt/xgboost/histogram_based_v2/proto/federated_pb2_grpc.py
@@ -1,3 +1,17 @@
+# Copyright (c) 2024, NVIDIA CORPORATION.  All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 # Generated by the gRPC Python protocol compiler plugin. DO NOT EDIT!
 """Client and server classes corresponding to protobuf-defined services."""
 import grpc