diff --git a/requirements-test.txt b/requirements-test.txt
index 4e52044..a7dba79 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -1,8 +1,9 @@
-pytest
 aioresponses
-pytest_asyncio
-pytest_flask
+asynctest
+pytest
+pytest-asyncio
+pytest-flask
 pytest-mock
 swh.core[testing-core]
 swh.model[testing]
-asynctest
+types-pyyaml
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__)