diff --git a/synapse/app/client_reader.py b/synapse/app/client_reader.py
index a821a6ce62..e4ea3ab933 100644
--- a/synapse/app/client_reader.py
+++ b/synapse/app/client_reader.py
@@ -29,6 +29,7 @@ from synapse.replication.slave.storage.keys import SlavedKeyStore
from synapse.replication.slave.storage.room import RoomStore
from synapse.replication.slave.storage.directory import DirectoryStore
from synapse.replication.slave.storage.registration import SlavedRegistrationStore
+from synapse.replication.slave.storage.transactions import TransactionStore
from synapse.rest.client.v1.room import PublicRoomListRestServlet
from synapse.server import HomeServer
from synapse.storage.client_ips import ClientIpStore
@@ -63,6 +64,7 @@ class ClientReaderSlavedStore(
DirectoryStore,
SlavedApplicationServiceStore,
SlavedRegistrationStore,
+ TransactionStore,
BaseSlavedStore,
ClientIpStore, # After BaseSlavedStore because the constructor is different
):
diff --git a/synapse/app/media_repository.py b/synapse/app/media_repository.py
index 3c7984a237..1444e69a42 100644
--- a/synapse/app/media_repository.py
+++ b/synapse/app/media_repository.py
@@ -24,6 +24,7 @@ from synapse.metrics.resource import MetricsResource, METRICS_PREFIX
from synapse.replication.slave.storage._base import BaseSlavedStore
from synapse.replication.slave.storage.appservice import SlavedApplicationServiceStore
from synapse.replication.slave.storage.registration import SlavedRegistrationStore
+from synapse.replication.slave.storage.transactions import TransactionStore
from synapse.rest.media.v0.content_repository import ContentRepoResource
from synapse.rest.media.v1.media_repository import MediaRepositoryResource
from synapse.server import HomeServer
@@ -59,6 +60,7 @@ logger = logging.getLogger("synapse.app.media_repository")
class MediaRepositorySlavedStore(
SlavedApplicationServiceStore,
SlavedRegistrationStore,
+ TransactionStore,
BaseSlavedStore,
MediaRepositoryStore,
ClientIpStore,
|