diff --git a/requirements-test.txt b/requirements-test.txt
index 789894e..555c601 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -1,6 +1,10 @@
 pytest
 pytest-mock
 requests_mock
 swh-core[testing]
 swh-scheduler[testing] >= 0.5.0
 swh-storage[testing] >= 0.10.6
+types-click
+types-python-dateutil
+types-pyyaml
+types-requests
diff --git a/swh/__init__.py b/swh/__init__.py
index 397a357..90d8b04 100644
--- a/swh/__init__.py
+++ b/swh/__init__.py
@@ -1,9 +1,9 @@
-# Copyright (C) 2016-2020  The Software Heritage developers
+# Copyright (C) 2016-2021  The Software Heritage developers
 # See the AUTHORS file at the top-level directory of this distribution
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
 from pkgutil import extend_path
-from typing import Iterable
+from typing import List
 
-__path__: Iterable[str] = extend_path(__path__, __name__)
+__path__: List[str] = extend_path(__path__, __name__)
diff --git a/swh/loader/__init__.py b/swh/loader/__init__.py
index 397a357..90d8b04 100644
--- a/swh/loader/__init__.py
+++ b/swh/loader/__init__.py
@@ -1,9 +1,9 @@
-# Copyright (C) 2016-2020  The Software Heritage developers
+# Copyright (C) 2016-2021  The Software Heritage developers
 # See the AUTHORS file at the top-level directory of this distribution
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
 from pkgutil import extend_path
-from typing import Iterable
+from typing import List
 
-__path__: Iterable[str] = extend_path(__path__, __name__)
+__path__: List[str] = extend_path(__path__, __name__)