diff --git a/tests/test_datastores.py b/tests/test_datastores.py
index e0c8a17f..d5950ff4 100644
--- a/tests/test_datastores.py
+++ b/tests/test_datastores.py
@@ -857,5 +857,8 @@ async def test_psycopg(self) -> None:
         )
 
     async def test_mongodb(self) -> None:
-        data_store = MongoDBDataStore("mongodb://localhost")
-        assert repr(data_store) == "MongoDBDataStore(host=[('localhost', 27017)])"
+        from pymongo import MongoClient
+
+        with MongoClient() as client:
+            data_store = MongoDBDataStore(client)
+            assert repr(data_store) == "MongoDBDataStore(host=[('localhost', 27017)])"