diff --git a/requirements-http.txt b/requirements-http.txt
index b09e6fb..4c37acc 100644
--- a/requirements-http.txt
+++ b/requirements-http.txt
@@ -1,8 +1,9 @@
 # requirements for swh.core.api
 aiohttp
 aiohttp_utils >= 3.1.1
 Flask
 iso8601
 msgpack >= 1.0.0
 requests
 blinker  # dependency of sentry-sdk[flask]
+types-Flask
diff --git a/requirements-test.txt b/requirements-test.txt
index 1b64663..4863c62 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -1,6 +1,7 @@
 pytest
 pytest-mock
 requests-mock
 hypothesis >= 3.11.0
 pre-commit
 pytz
+types-pytz
diff --git a/requirements.txt b/requirements.txt
index 7c16399..a00763e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,7 @@
 Click
 Deprecated
 PyYAML
 sentry-sdk
+types-click
+types-PyYAML
+types-requests
diff --git a/swh/__init__.py b/swh/__init__.py
index f14e196..8d9f151 100644
--- a/swh/__init__.py
+++ b/swh/__init__.py
@@ -1,4 +1,4 @@
 from pkgutil import extend_path
-from typing import Iterable
+from typing import List
 
-__path__ = extend_path(__path__, __name__)  # type: Iterable[str]
+__path__: List[str] = extend_path(__path__, __name__)