diff --git a/synapse/storage/databases/main/events_worker.py b/synapse/storage/databases/main/events_worker.py
index 2e24846ae6ca..a60e3f4fdde0 100644
--- a/synapse/storage/databases/main/events_worker.py
+++ b/synapse/storage/databases/main/events_worker.py
@@ -22,7 +22,6 @@
     Dict,
     Iterable,
     List,
-    NoReturn,
     Optional,
     Set,
     Tuple,
diff --git a/tests/handlers/test_federation_event.py b/tests/handlers/test_federation_event.py
index 2ed40f732aa3..489ba5773672 100644
--- a/tests/handlers/test_federation_event.py
+++ b/tests/handlers/test_federation_event.py
@@ -13,8 +13,6 @@
 # limitations under the License.
 from unittest import mock
 
-from parameterized import parameterized
-
 from synapse.events import make_event_from_dict
 from synapse.events.snapshot import EventContext
 from synapse.federation.transport.client import StateRequestResponse