diff --git a/pytest.ini b/pytest.ini
index d14d20c..e1c8e68 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -1,7 +1,9 @@
 [pytest]
 # Drop this when these fixtures aren't imported automatically
 addopts = -p no:pytest_swh_scheduler -p no:pytest_swh_storage
 
 norecursedirs = build docs .*
 markers =
     fs: execute tests that write to the filesystem
+
+asyncio_mode = strict