diff --git a/src/lerobot/motors/dynamixel/__init__.py b/src/lerobot/motors/dynamixel/__init__.py
index 3e414557..425f8538 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 911d1d19..75da2d22 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 324e3c8e..26603ebb 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 ae98a2c3..6271c4e5 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 e3d10c5c..ada2ff36 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 63c3e1c1..b995aab1 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 f6615b15..9ff2baf4 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 e2a859cd..b3070bbd 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 522d02f1..bfba07fc 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 ec93547f..56f48af7 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 04b5c0f2..b3c6c0bf 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 5761bf78..72d01003 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 ad2d6a0e..1bf9d51d 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 63c877e6..747416be 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 1f45170e..11e277c9 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 ac45b6dd..fa5a1997 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 122ee329..42e312f4 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 957574eb..e81057c9 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 64592439..00403d14 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 e0b677d5..041c0942 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 91e33473..a499dbfe 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 971fc00a..8108c7c2 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 e3992318..bde0efae 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 c29cc921..e37d4a2c 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 a54e4905..d990b5b0 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 c5a170dd..d6ea1db2 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 966af3fb..27650ef1 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 498eec94..d76b9591 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 2ec6a290..e45688c1 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 9c979676..81394286 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 (