diff --git a/src/lerobot/motors/dynamixel/__init__.py b/src/lerobot/motors/dynamixel/__init__.py
index 3e41455..425f853 100644
--- a/src/lerobot/motors/dynamixel/__init__.py
+++ b/src/lerobot/motors/dynamixel/__init__.py
@@ -1,2 +1,18 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 from .dynamixel import DriveMode, DynamixelMotorsBus, OperatingMode, TorqueMode
 from .tables import *
diff --git a/src/lerobot/motors/feetech/__init__.py b/src/lerobot/motors/feetech/__init__.py
index 911d1d1..75da2d2 100644
--- a/src/lerobot/motors/feetech/__init__.py
+++ b/src/lerobot/motors/feetech/__init__.py
@@ -1,2 +1,18 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 from .feetech import DriveMode, FeetechMotorsBus, OperatingMode, TorqueMode
 from .tables import *
diff --git a/src/lerobot/robots/hope_jr/__init__.py b/src/lerobot/robots/hope_jr/__init__.py
index 324e3c8..26603eb 100644
--- a/src/lerobot/robots/hope_jr/__init__.py
+++ b/src/lerobot/robots/hope_jr/__init__.py
@@ -1,3 +1,19 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 from .config_hope_jr import HopeJrArmConfig, HopeJrHandConfig
 from .hope_jr_arm import HopeJrArm
 from .hope_jr_hand import HopeJrHand
diff --git a/src/lerobot/robots/koch_follower/__init__.py b/src/lerobot/robots/koch_follower/__init__.py
index ae98a2c..6271c4e 100644
--- a/src/lerobot/robots/koch_follower/__init__.py
+++ b/src/lerobot/robots/koch_follower/__init__.py
@@ -1,2 +1,18 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 from .config_koch_follower import KochFollowerConfig
 from .koch_follower import KochFollower
diff --git a/src/lerobot/robots/lekiwi/__init__.py b/src/lerobot/robots/lekiwi/__init__.py
index e3d10c5..ada2ff3 100644
--- a/src/lerobot/robots/lekiwi/__init__.py
+++ b/src/lerobot/robots/lekiwi/__init__.py
@@ -1,3 +1,19 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 from .config_lekiwi import LeKiwiClientConfig, LeKiwiConfig
 from .lekiwi import LeKiwi
 from .lekiwi_client import LeKiwiClient
diff --git a/src/lerobot/robots/so100_follower/__init__.py b/src/lerobot/robots/so100_follower/__init__.py
index 63c3e1c..b995aab 100644
--- a/src/lerobot/robots/so100_follower/__init__.py
+++ b/src/lerobot/robots/so100_follower/__init__.py
@@ -1,3 +1,19 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 from .config_so100_follower import SO100FollowerConfig, SO100FollowerEndEffectorConfig
 from .so100_follower import SO100Follower
 from .so100_follower_end_effector import SO100FollowerEndEffector
diff --git a/src/lerobot/robots/so101_follower/__init__.py b/src/lerobot/robots/so101_follower/__init__.py
index f6615b1..9ff2baf 100644
--- a/src/lerobot/robots/so101_follower/__init__.py
+++ b/src/lerobot/robots/so101_follower/__init__.py
@@ -1,2 +1,18 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 from .config_so101_follower import SO101FollowerConfig
 from .so101_follower import SO101Follower
diff --git a/src/lerobot/robots/stretch3/__init__.py b/src/lerobot/robots/stretch3/__init__.py
index e2a859c..b3070bb 100644
--- a/src/lerobot/robots/stretch3/__init__.py
+++ b/src/lerobot/robots/stretch3/__init__.py
@@ -1,2 +1,18 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 from .configuration_stretch3 import Stretch3RobotConfig
 from .robot_stretch3 import Stretch3Robot
diff --git a/src/lerobot/robots/viperx/__init__.py b/src/lerobot/robots/viperx/__init__.py
index 522d02f..bfba07f 100644
--- a/src/lerobot/robots/viperx/__init__.py
+++ b/src/lerobot/robots/viperx/__init__.py
@@ -1,2 +1,18 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 from .config_viperx import ViperXConfig
 from .viperx import ViperX
diff --git a/src/lerobot/teleoperators/__init__.py b/src/lerobot/teleoperators/__init__.py
index ec93547..56f48af 100644
--- a/src/lerobot/teleoperators/__init__.py
+++ b/src/lerobot/teleoperators/__init__.py
@@ -1,3 +1,19 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 from .config import TeleoperatorConfig
 from .teleoperator import Teleoperator
 from .utils import make_teleoperator_from_config
diff --git a/src/lerobot/teleoperators/homunculus/__init__.py b/src/lerobot/teleoperators/homunculus/__init__.py
index 04b5c0f..b3c6c0b 100644
--- a/src/lerobot/teleoperators/homunculus/__init__.py
+++ b/src/lerobot/teleoperators/homunculus/__init__.py
@@ -1,3 +1,19 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 from .config_homunculus import HomunculusArmConfig, HomunculusGloveConfig
 from .homunculus_arm import HomunculusArm
 from .homunculus_glove import HomunculusGlove
diff --git a/src/lerobot/teleoperators/keyboard/__init__.py b/src/lerobot/teleoperators/keyboard/__init__.py
index 5761bf7..72d0100 100644
--- a/src/lerobot/teleoperators/keyboard/__init__.py
+++ b/src/lerobot/teleoperators/keyboard/__init__.py
@@ -1,3 +1,19 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 from .configuration_keyboard import KeyboardEndEffectorTeleopConfig, KeyboardTeleopConfig
 from .teleop_keyboard import KeyboardEndEffectorTeleop, KeyboardTeleop
 
diff --git a/src/lerobot/teleoperators/koch_leader/__init__.py b/src/lerobot/teleoperators/koch_leader/__init__.py
index ad2d6a0..1bf9d51 100644
--- a/src/lerobot/teleoperators/koch_leader/__init__.py
+++ b/src/lerobot/teleoperators/koch_leader/__init__.py
@@ -1,2 +1,18 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 from .config_koch_leader import KochLeaderConfig
 from .koch_leader import KochLeader
diff --git a/src/lerobot/teleoperators/so100_leader/__init__.py b/src/lerobot/teleoperators/so100_leader/__init__.py
index 63c877e..747416b 100644
--- a/src/lerobot/teleoperators/so100_leader/__init__.py
+++ b/src/lerobot/teleoperators/so100_leader/__init__.py
@@ -1,2 +1,18 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 from .config_so100_leader import SO100LeaderConfig
 from .so100_leader import SO100Leader
diff --git a/src/lerobot/teleoperators/so101_leader/__init__.py b/src/lerobot/teleoperators/so101_leader/__init__.py
index 1f45170..11e277c 100644
--- a/src/lerobot/teleoperators/so101_leader/__init__.py
+++ b/src/lerobot/teleoperators/so101_leader/__init__.py
@@ -1,2 +1,18 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 from .config_so101_leader import SO101LeaderConfig
 from .so101_leader import SO101Leader
diff --git a/src/lerobot/teleoperators/stretch3_gamepad/__init__.py b/src/lerobot/teleoperators/stretch3_gamepad/__init__.py
index ac45b6d..fa5a199 100644
--- a/src/lerobot/teleoperators/stretch3_gamepad/__init__.py
+++ b/src/lerobot/teleoperators/stretch3_gamepad/__init__.py
@@ -1,2 +1,18 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 from .configuration_stretch3 import Stretch3GamePadConfig
 from .stretch3_gamepad import Stretch3GamePad
diff --git a/src/lerobot/teleoperators/widowx/__init__.py b/src/lerobot/teleoperators/widowx/__init__.py
index 122ee32..42e312f 100644
--- a/src/lerobot/teleoperators/widowx/__init__.py
+++ b/src/lerobot/teleoperators/widowx/__init__.py
@@ -1,2 +1,18 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 from .config_widowx import WidowXConfig
 from .widowx import WidowX
diff --git a/tests/configs/test_plugin_loading.py b/tests/configs/test_plugin_loading.py
index 957574e..e81057c 100644
--- a/tests/configs/test_plugin_loading.py
+++ b/tests/configs/test_plugin_loading.py
@@ -1,3 +1,19 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 import sys
 from dataclasses import dataclass
 from pathlib import Path
diff --git a/tests/mocks/mock_dynamixel.py b/tests/mocks/mock_dynamixel.py
index 6459243..00403d1 100644
--- a/tests/mocks/mock_dynamixel.py
+++ b/tests/mocks/mock_dynamixel.py
@@ -1,3 +1,19 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 import abc
 from typing import Callable
 
diff --git a/tests/mocks/mock_feetech.py b/tests/mocks/mock_feetech.py
index e0b677d..041c094 100644
--- a/tests/mocks/mock_feetech.py
+++ b/tests/mocks/mock_feetech.py
@@ -1,3 +1,19 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 import abc
 from typing import Callable
 
diff --git a/tests/mocks/mock_motors_bus.py b/tests/mocks/mock_motors_bus.py
index 91e3347..a499dbf 100644
--- a/tests/mocks/mock_motors_bus.py
+++ b/tests/mocks/mock_motors_bus.py
@@ -1,3 +1,17 @@
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 # ruff: noqa: N802
 
 from lerobot.motors.motors_bus import (
diff --git a/tests/mocks/mock_robot.py b/tests/mocks/mock_robot.py
index 971fc00..8108c7c 100644
--- a/tests/mocks/mock_robot.py
+++ b/tests/mocks/mock_robot.py
@@ -1,3 +1,19 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 import random
 from dataclasses import dataclass, field
 from functools import cached_property
diff --git a/tests/mocks/mock_serial_patch.py b/tests/mocks/mock_serial_patch.py
index e399231..bde0efa 100644
--- a/tests/mocks/mock_serial_patch.py
+++ b/tests/mocks/mock_serial_patch.py
@@ -1,3 +1,19 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 import threading
 import time
 
diff --git a/tests/mocks/mock_teleop.py b/tests/mocks/mock_teleop.py
index c29cc92..e37d4a2 100644
--- a/tests/mocks/mock_teleop.py
+++ b/tests/mocks/mock_teleop.py
@@ -1,3 +1,19 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 import random
 from dataclasses import dataclass
 from functools import cached_property
diff --git a/tests/motors/test_dynamixel.py b/tests/motors/test_dynamixel.py
index a54e490..d990b5b 100644
--- a/tests/motors/test_dynamixel.py
+++ b/tests/motors/test_dynamixel.py
@@ -1,3 +1,19 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 import re
 import sys
 from typing import Generator
diff --git a/tests/motors/test_feetech.py b/tests/motors/test_feetech.py
index c5a170d..d6ea1db 100644
--- a/tests/motors/test_feetech.py
+++ b/tests/motors/test_feetech.py
@@ -1,3 +1,19 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 import re
 import sys
 from typing import Generator
diff --git a/tests/motors/test_motors_bus.py b/tests/motors/test_motors_bus.py
index 966af3f..27650ef 100644
--- a/tests/motors/test_motors_bus.py
+++ b/tests/motors/test_motors_bus.py
@@ -1,3 +1,19 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 import re
 from unittest.mock import patch
 
diff --git a/tests/robots/test_so100_follower.py b/tests/robots/test_so100_follower.py
index 498eec9..d76b959 100644
--- a/tests/robots/test_so100_follower.py
+++ b/tests/robots/test_so100_follower.py
@@ -1,3 +1,19 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 from contextlib import contextmanager
 from unittest.mock import MagicMock, patch
 
diff --git a/tests/test_control_robot.py b/tests/test_control_robot.py
index 2ec6a29..e45688c 100644
--- a/tests/test_control_robot.py
+++ b/tests/test_control_robot.py
@@ -1,3 +1,19 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 from lerobot.calibrate import CalibrateConfig, calibrate
 from lerobot.record import DatasetRecordConfig, RecordConfig, record
 from lerobot.replay import DatasetReplayConfig, ReplayConfig, replay
diff --git a/tests/utils/test_encoding_utils.py b/tests/utils/test_encoding_utils.py
index 9c97967..8139428 100644
--- a/tests/utils/test_encoding_utils.py
+++ b/tests/utils/test_encoding_utils.py
@@ -1,3 +1,19 @@
+#!/usr/bin/env python
+
+# Copyright 2025 The HuggingFace Inc. team. 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.
+
 import pytest
 
 from lerobot.utils.encoding_utils import (