diff --git a/synapse/storage/databases/main/directory.py b/synapse/storage/databases/main/directory.py
index a3442814d7..5628d42e71 100644
--- a/synapse/storage/databases/main/directory.py
+++ b/synapse/storage/databases/main/directory.py
@@ -17,7 +17,7 @@ from typing import Iterable, List, Optional, Tuple
from synapse.api.errors import SynapseError
from synapse.storage.database import LoggingTransaction
-from synapse.storage.databases.main import CacheInvalidationWorkerStore
+from synapse.storage.databases.main.cache import CacheInvalidationWorkerStore
from synapse.types import RoomAlias
from synapse.util.caches.descriptors import cached
diff --git a/synapse/storage/databases/main/events_forward_extremities.py b/synapse/storage/databases/main/events_forward_extremities.py
index 68901b4335..aa47a2aee4 100644
--- a/synapse/storage/databases/main/events_forward_extremities.py
+++ b/synapse/storage/databases/main/events_forward_extremities.py
@@ -17,7 +17,7 @@ from typing import Any, Dict, List
from synapse.api.errors import SynapseError
from synapse.storage.database import LoggingTransaction
-from synapse.storage.databases.main import CacheInvalidationWorkerStore
+from synapse.storage.databases.main.cache import CacheInvalidationWorkerStore
from synapse.storage.databases.main.event_federation import EventFederationWorkerStore
logger = logging.getLogger(__name__)
diff --git a/synapse/storage/databases/main/purge_events.py b/synapse/storage/databases/main/purge_events.py
index 3eb30944bf..2f9fdb18e2 100644
--- a/synapse/storage/databases/main/purge_events.py
+++ b/synapse/storage/databases/main/purge_events.py
@@ -16,7 +16,7 @@ import logging
from typing import Any, List, Set, Tuple
from synapse.api.errors import SynapseError
-from synapse.storage.databases.main import CacheInvalidationWorkerStore
+from synapse.storage.databases.main.cache import CacheInvalidationWorkerStore
from synapse.storage.databases.main.state import StateGroupWorkerStore
from synapse.types import RoomStreamToken
diff --git a/synapse/storage/databases/main/user_erasure_store.py b/synapse/storage/databases/main/user_erasure_store.py
index f79006533f..eb277b9df3 100644
--- a/synapse/storage/databases/main/user_erasure_store.py
+++ b/synapse/storage/databases/main/user_erasure_store.py
@@ -15,7 +15,7 @@
from typing import Dict, Iterable
from synapse.storage.database import LoggingTransaction
-from synapse.storage.databases.main import CacheInvalidationWorkerStore
+from synapse.storage.databases.main.cache import CacheInvalidationWorkerStore
from synapse.util.caches.descriptors import cached, cachedList
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