diff --git a/requirements-test.txt b/requirements-test.txt
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -1,5 +1,6 @@
 hypothesis >= 3.11.0
-pytest
+pytest < 7.0.0  # v7.0.0 removed _pytest.tmpdir.TempdirFactory, which is used by some of the pytest plugins we use
+
 pytest-mock
 # pytz is in fact a dep of swh.model[testing] and should not be necessary, but
 # the dep on swh.model in the main requirements-swh.txt file shadows this one