diff --git a/requirements-test.txt b/requirements-test.txt
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -2,4 +2,10 @@
 pytest-mock
 confluent-kafka
 pytest-redis
+pyyaml
 requests_mock
+
+types-flask
+types-pyyaml
+types-redis
+types-requests
diff --git a/swh/__init__.py b/swh/__init__.py
--- a/swh/__init__.py
+++ b/swh/__init__.py
@@ -4,6 +4,6 @@
 # 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__)