diff --git a/common/lib/pytest.ini b/common/lib/pytest.ini
index 9f9b54a12c..93c230eab2 100644
--- a/common/lib/pytest.ini
+++ b/common/lib/pytest.ini
@@ -8,6 +8,8 @@ filterwarnings =
     default
     ignore:No request passed to the backend, unable to rate-limit:UserWarning
     ignore::xblock.exceptions.FieldDataDeprecationWarning
+markers =
+    mongo
 norecursedirs = .cache
 python_classes =
 python_files = tests.py test_*.py tests_*.py *_tests.py __init__.py