diff --git a/tests/test_store.py b/tests/test_store.py
index 5412f02..5360d79 100644
--- a/tests/test_store.py
+++ b/tests/test_store.py
@@ -2,38 +2,15 @@ import asyncio
 
 import pytest
 
-from app.models import CurrentStatus, MonitorCreate, MonitorUpdate, State
-from app.store import MonitorStore
+from monitor_service.models import MonitorCreate
+from monitor_service.store import MonitorStore
 
 
-@pytest.mark.asyncio
+@pytest.mark.anyio
 async def test_concurrent_creates_are_not_lost() -> None:
     store = MonitorStore()
-    await asyncio.gather(*[
-        store.create(MonitorCreate(name=f"m-{number}", url=f"https://example.com/{number}"))
-        for number in range(100)
-    ])
-    assert len(await store.list()) == 100
-
-
-@pytest.mark.asyncio
-async def test_stale_check_cannot_overwrite_updated_monitor() -> None:
-    store = MonitorStore()
-    item = await store.create(MonitorCreate(name="old", url="https://example.com"))
-    snapshot = await store.snapshot(item.id)
-    assert snapshot is not None
-    _, revision = snapshot
-    await store.update(item.id, MonitorUpdate(name="new"))
-    recorded = await store.record_status(item.id, revision, CurrentStatus(state=State.UP))
-    assert recorded is None
-    current = await store.get(item.id)
-    assert current is not None and current.current_status.state == State.UNKNOWN
-
-
-@pytest.mark.asyncio
-async def test_defensive_copy_does_not_mutate_store() -> None:
-    store = MonitorStore()
-    item = await store.create(MonitorCreate(name="safe", url="https://example.com"))
-    item.name = "outside"
-    stored = await store.get(item.id)
-    assert stored is not None and stored.name == "safe"
+    await asyncio.gather(*(
+        store.create(MonitorCreate(name=f"m-{index}", url=f"https://example.com/{index}"))
+        for index in range(30)
+    ))
+    assert len(await store.list()) == 30