diff --git a/fairscale/experimental/tooling/__init__.py b/fairscale/experimental/tooling/__init__.py
index e69de29bb..2c0a89d63 100644
--- a/fairscale/experimental/tooling/__init__.py
+++ b/fairscale/experimental/tooling/__init__.py
@@ -0,0 +1,8 @@
+# Copyright (c) Facebook, Inc. and its affiliates. All rights reserved.
+#
+# This source code is licensed under the BSD license found in the
+# LICENSE file in the root directory of this source tree.
+
+from typing import List
+
+__all__: List[str] = []
diff --git a/fairscale/fair_dev/__init__.py b/fairscale/fair_dev/__init__.py
new file mode 100644
index 000000000..2c0a89d63
--- /dev/null
+++ b/fairscale/fair_dev/__init__.py
@@ -0,0 +1,8 @@
+# Copyright (c) Facebook, Inc. and its affiliates. All rights reserved.
+#
+# This source code is licensed under the BSD license found in the
+# LICENSE file in the root directory of this source tree.
+
+from typing import List
+
+__all__: List[str] = []
diff --git a/fairscale/fair_dev/testing/__init__.py b/fairscale/fair_dev/testing/__init__.py
new file mode 100644
index 000000000..2c0a89d63
--- /dev/null
+++ b/fairscale/fair_dev/testing/__init__.py
@@ -0,0 +1,8 @@
+# Copyright (c) Facebook, Inc. and its affiliates. All rights reserved.
+#
+# This source code is licensed under the BSD license found in the
+# LICENSE file in the root directory of this source tree.
+
+from typing import List
+
+__all__: List[str] = []