diff --git a/changelog.d/4667.bugfix b/changelog.d/4667.bugfix
new file mode 100644
index 000000000..33ad00c13
--- /dev/null
+++ b/changelog.d/4667.bugfix
@@ -0,0 +1 @@
+Fix kicking guest users on guest access revocation in worker mode.
diff --git a/synapse/app/federation_reader.py b/synapse/app/federation_reader.py
index 6ee2b76dc..b116c1766 100644
--- a/synapse/app/federation_reader.py
+++ b/synapse/app/federation_reader.py
@@ -40,6 +40,7 @@ from synapse.replication.slave.storage.profile import SlavedProfileStore
 from synapse.replication.slave.storage.push_rule import SlavedPushRuleStore
 from synapse.replication.slave.storage.pushers import SlavedPusherStore
 from synapse.replication.slave.storage.receipts import SlavedReceiptsStore
+from synapse.replication.slave.storage.registration import SlavedRegistrationStore
 from synapse.replication.slave.storage.room import RoomStore
 from synapse.replication.slave.storage.transactions import SlavedTransactionStore
 from synapse.replication.tcp.client import ReplicationClientHandler
@@ -62,6 +63,7 @@ class FederationReaderSlavedStore(
     SlavedReceiptsStore,
     SlavedEventStore,
     SlavedKeyStore,
+    SlavedRegistrationStore,
     RoomStore,
     DirectoryStore,
     SlavedTransactionStore,
diff --git a/synapse/handlers/_base.py b/synapse/handlers/_base.py
index 704181d2d..594754cfd 100644
--- a/synapse/handlers/_base.py
+++ b/synapse/handlers/_base.py
@@ -167,4 +167,4 @@ class BaseHandler(object):
                     ratelimit=False,
                 )
             except Exception as e:
-                logger.warn("Error kicking guest user: %s" % (e,))
+                logger.exception("Error kicking guest user: %s" % (e,))