diff --git a/tests/conftest.py b/tests/conftest.py
index 3a3203fd..171a5433 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -53,7 +53,7 @@ def bare_ds():
     return Datasette(memory=True)
 
 
-@pytest_asyncio.fixture
+@pytest_asyncio.fixture(scope="session")
 async def ds_client():
     from datasette.app import Datasette
     from datasette.database import Database