diff --git a/python-dateutil.spec b/python-dateutil.spec
index a8d9e10..5daa39e 100644
--- a/python-dateutil.spec
+++ b/python-dateutil.spec
@@ -77,7 +77,7 @@ make -C docs html
 
 %if %{with tests}
 %check
-%{__python3} -m pytest
+%{__python3} -m pytest -W ignore::pytest.PytestUnknownMarkWarning
 
 # Tests skipped on Python 2:
 # dateutil/test/property: Tests using python2-hypothesis are skipped to break