diff --git a/src/net.rs b/src/net.rs
index 12ce62c5..ec32efeb 100644
--- a/src/net.rs
+++ b/src/net.rs
@@ -1,3 +1,9 @@
+// Copyright (c) Meta Platforms, Inc. and affiliates.
+// All rights reserved.
+//
+// This source code is licensed under the BSD-style license found in the
+// LICENSE file in the root directory of this source tree.
+
 use std::time::Duration;
 
 use anyhow::Result;
diff --git a/src/retry.rs b/src/retry.rs
index 6a84cff6..a4143c6f 100644
--- a/src/retry.rs
+++ b/src/retry.rs
@@ -1,3 +1,9 @@
+// Copyright (c) Meta Platforms, Inc. and affiliates.
+// All rights reserved.
+//
+// This source code is licensed under the BSD-style license found in the
+// LICENSE file in the root directory of this source tree.
+
 use std::future::Future;
 use std::pin::Pin;
 use std::time::Duration;
diff --git a/src/timeout.rs b/src/timeout.rs
index da8af4fb..d5963950 100644
--- a/src/timeout.rs
+++ b/src/timeout.rs
@@ -1,3 +1,9 @@
+// Copyright (c) Meta Platforms, Inc. and affiliates.
+// All rights reserved.
+//
+// This source code is licensed under the BSD-style license found in the
+// LICENSE file in the root directory of this source tree.
+
 use std::time::Duration;
 
 use anyhow::Result;
diff --git a/tools/linter/adapters/pyre_linter.py b/tools/linter/adapters/pyre_linter.py
index 99f2c3b8..47b2f4e7 100644
--- a/tools/linter/adapters/pyre_linter.py
+++ b/tools/linter/adapters/pyre_linter.py
@@ -1,3 +1,9 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
 import argparse
 import concurrent.futures
 import json
diff --git a/tools/linter/adapters/rust_linter.py b/tools/linter/adapters/rust_linter.py
index 9c8e9201..08a8f95f 100644
--- a/tools/linter/adapters/rust_linter.py
+++ b/tools/linter/adapters/rust_linter.py
@@ -1,3 +1,9 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
 from __future__ import annotations
 
 import argparse
diff --git a/torchft/_test/diloco_trainer.py b/torchft/_test/diloco_trainer.py
index 812604e1..51a6fe4a 100644
--- a/torchft/_test/diloco_trainer.py
+++ b/torchft/_test/diloco_trainer.py
@@ -1,3 +1,9 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
 import copy
 import logging
 import os
diff --git a/torchft/_torchft.pyi b/torchft/_torchft.pyi
index 95dbfd5b..228d5a35 100644
--- a/torchft/_torchft.pyi
+++ b/torchft/_torchft.pyi
@@ -1,3 +1,9 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
 from dataclasses import dataclass
 from datetime import timedelta
 from typing import Hashable, List, Optional
diff --git a/torchft/checkpointing/_rwlock.py b/torchft/checkpointing/_rwlock.py
index 54b6d088..4bddc62e 100644
--- a/torchft/checkpointing/_rwlock.py
+++ b/torchft/checkpointing/_rwlock.py
@@ -1,4 +1,9 @@
-# -*- coding: utf-8 -*-
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
 """rwlock.py
 
 Adapted from: https://github.com/tylerneylon/rwlock/blob/main/rwlock.py
diff --git a/torchft/checkpointing/_serialization.py b/torchft/checkpointing/_serialization.py
index d242fb91..4d4991ce 100644
--- a/torchft/checkpointing/_serialization.py
+++ b/torchft/checkpointing/_serialization.py
@@ -1,3 +1,9 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
 import io
 import warnings
 from typing import IO
diff --git a/torchft/checkpointing/http_transport_bench.py b/torchft/checkpointing/http_transport_bench.py
index f002895c..211914ec 100644
--- a/torchft/checkpointing/http_transport_bench.py
+++ b/torchft/checkpointing/http_transport_bench.py
@@ -1,3 +1,9 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
 import logging
 import sys
 from datetime import timedelta
diff --git a/torchft/checkpointing/pg_transport.py b/torchft/checkpointing/pg_transport.py
index 0c792af6..ca95d98e 100644
--- a/torchft/checkpointing/pg_transport.py
+++ b/torchft/checkpointing/pg_transport.py
@@ -1,3 +1,9 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
 import logging
 import pickle
 import time
diff --git a/torchft/checkpointing/pg_transport_bench.py b/torchft/checkpointing/pg_transport_bench.py
index 9cb76d60..be2c0995 100644
--- a/torchft/checkpointing/pg_transport_bench.py
+++ b/torchft/checkpointing/pg_transport_bench.py
@@ -1,3 +1,9 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
 import logging
 import sys
 from concurrent.futures import ThreadPoolExecutor
diff --git a/torchft/checkpointing/pg_transport_test.py b/torchft/checkpointing/pg_transport_test.py
index bd634658..af3f9865 100644
--- a/torchft/checkpointing/pg_transport_test.py
+++ b/torchft/checkpointing/pg_transport_test.py
@@ -1,3 +1,9 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
 import sys
 from datetime import timedelta
 from unittest import skipIf, skipUnless, TestCase
diff --git a/torchft/checkpointing/rwlock_test.py b/torchft/checkpointing/rwlock_test.py
index 49af8f6f..9169332b 100644
--- a/torchft/checkpointing/rwlock_test.py
+++ b/torchft/checkpointing/rwlock_test.py
@@ -1,3 +1,9 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
 import pytest
 
 from torchft.checkpointing._rwlock import RWLock
diff --git a/torchft/checkpointing/transport_test.py b/torchft/checkpointing/transport_test.py
index c33801a3..b6edeb8b 100644
--- a/torchft/checkpointing/transport_test.py
+++ b/torchft/checkpointing/transport_test.py
@@ -1,3 +1,9 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
 import threading
 import traceback
 from concurrent.futures import as_completed, ThreadPoolExecutor
diff --git a/torchft/coordination.py b/torchft/coordination.py
index 0173b8e9..c0a6d634 100644
--- a/torchft/coordination.py
+++ b/torchft/coordination.py
@@ -1,3 +1,9 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
 """
 Coordination (Low Level API)
 ============================
diff --git a/torchft/diloco_regression_test.py b/torchft/diloco_regression_test.py
index 3d2236a5..1db8bc12 100644
--- a/torchft/diloco_regression_test.py
+++ b/torchft/diloco_regression_test.py
@@ -1,3 +1,9 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
 import argparse
 import copy
 import json
diff --git a/torchft/examples/slurm/punisher.py b/torchft/examples/slurm/punisher.py
index 328d9f41..c362e955 100644
--- a/torchft/examples/slurm/punisher.py
+++ b/torchft/examples/slurm/punisher.py
@@ -1,3 +1,9 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
 import argparse
 import logging
 import random
diff --git a/torchft/examples/slurm/runner.py b/torchft/examples/slurm/runner.py
index 4111b3db..dac3c949 100644
--- a/torchft/examples/slurm/runner.py
+++ b/torchft/examples/slurm/runner.py
@@ -1,3 +1,9 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
 import argparse
 import logging
 import os
diff --git a/torchft/futures.py b/torchft/futures.py
index c45a4a36..c7d74c12 100644
--- a/torchft/futures.py
+++ b/torchft/futures.py
@@ -1,3 +1,9 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
 import asyncio
 import os
 import queue
diff --git a/torchft/futures_test.py b/torchft/futures_test.py
index 679d497e..1d52b1a1 100644
--- a/torchft/futures_test.py
+++ b/torchft/futures_test.py
@@ -1,3 +1,9 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
 import threading
 from datetime import timedelta
 from unittest import skipUnless, TestCase
diff --git a/torchft/http.py b/torchft/http.py
index a93a84b2..f45fcb04 100644
--- a/torchft/http.py
+++ b/torchft/http.py
@@ -1,3 +1,9 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
 import socket
 from http.server import ThreadingHTTPServer
 
diff --git a/torchft/lighthouse_test.py b/torchft/lighthouse_test.py
index 067a6222..d81a5f39 100644
--- a/torchft/lighthouse_test.py
+++ b/torchft/lighthouse_test.py
@@ -1,3 +1,9 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
 import time
 from datetime import timedelta
 from unittest import TestCase
diff --git a/torchft/local_sgd_integ_test.py b/torchft/local_sgd_integ_test.py
index 25df3622..94cbbc5b 100644
--- a/torchft/local_sgd_integ_test.py
+++ b/torchft/local_sgd_integ_test.py
@@ -1,3 +1,9 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
 import copy
 import logging
 import os
diff --git a/torchft/manager_integ_test.py b/torchft/manager_integ_test.py
index 30d2ef4c..0b1e1714 100644
--- a/torchft/manager_integ_test.py
+++ b/torchft/manager_integ_test.py
@@ -1,3 +1,9 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
 import copy
 import logging
 import threading
diff --git a/torchft/multiprocessing.py b/torchft/multiprocessing.py
index 7ead1e98..37bf727c 100644
--- a/torchft/multiprocessing.py
+++ b/torchft/multiprocessing.py
@@ -1,3 +1,9 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
 import queue
 import time
 from datetime import timedelta
diff --git a/torchft/otel.py b/torchft/otel.py
index 4dcc1878..9f927a5b 100644
--- a/torchft/otel.py
+++ b/torchft/otel.py
@@ -1,3 +1,9 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
 import json
 import logging
 import os
diff --git a/torchft/torchx.py b/torchft/torchx.py
index 42d3f154..9d823c9e 100644
--- a/torchft/torchx.py
+++ b/torchft/torchx.py
@@ -1,3 +1,9 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
 """
 This is a file for TorchX components used for testing torchft.
 """
diff --git a/torchft/work.py b/torchft/work.py
index 9c6ff03a..47d95f94 100644
--- a/torchft/work.py
+++ b/torchft/work.py
@@ -1,3 +1,9 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
 from contextlib import nullcontext
 from datetime import timedelta
 from typing import Optional