diff --git a/metaseq/logging/progress_bar/aim_progress_bar.py b/metaseq/logging/progress_bar/aim_progress_bar.py
index 7a5d23906fda593e2904a3fe301f23f579430e11..4b1ad7dd912aaf590cbbf4b438fb8d1752391513 100644
--- a/metaseq/logging/progress_bar/aim_progress_bar.py
+++ b/metaseq/logging/progress_bar/aim_progress_bar.py
@@ -1,3 +1,8 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates. All Rights Reserved.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 from metaseq.logging.progress_bar.base_progress_bar import (
     BaseProgressBar,
     logger,
diff --git a/metaseq/modules/activation_functions.py b/metaseq/modules/activation_functions.py
index 5df4ea24d2a658ada96796de14390da4575ca4cb..f652651160aa17e21d26fcd4f7e37fc061dbed7f 100644
--- a/metaseq/modules/activation_functions.py
+++ b/metaseq/modules/activation_functions.py
@@ -1,3 +1,8 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates. All Rights Reserved.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 import torch
 import torch.nn as nn
 import torch.nn.functional as F
diff --git a/metaseq/scripts/convert_to_singleton.py b/metaseq/scripts/convert_to_singleton.py
index ceaf1c353fac20f3ecaace414abeb1901f8c4d2f..20900f0ee3d9d67587d7592d305249bf021b7624 100644
--- a/metaseq/scripts/convert_to_singleton.py
+++ b/metaseq/scripts/convert_to_singleton.py
@@ -1,5 +1,9 @@
 #!/usr/bin/env python
 
+# Copyright (c) Meta Platforms, Inc. and affiliates. All Rights Reserved.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
 """
 Script for backing out of the MP-resharded (reshard.pt) files and getting back
 a non-flattened state dict.
diff --git a/metaseq/scripts/generation_benchmarks.py b/metaseq/scripts/generation_benchmarks.py
index b64cb99fbe61fd4c95d75b18744113074d75a61b..1a37e2467270a9e7daffd20b5134d9dc19996a53 100644
--- a/metaseq/scripts/generation_benchmarks.py
+++ b/metaseq/scripts/generation_benchmarks.py
@@ -1,3 +1,8 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates. All Rights Reserved.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
 import os
 from transformers import GPT2Tokenizer
 from metaseq import checkpoint_utils, tasks, utils