1 files changed, 4 insertions, 4 deletions
diff --git a/tests/storage/databases/main/test_receipts.py b/tests/storage/databases/main/test_receipts.py
index c4f12d81d7..68026e2830 100644
--- a/tests/storage/databases/main/test_receipts.py
+++ b/tests/storage/databases/main/test_receipts.py
@@ -33,7 +33,7 @@ class ReceiptsBackgroundUpdateStoreTestCase(HomeserverTestCase):
         login.register_servlets,
     ]
 
-    def prepare(self, reactor: MemoryReactor, clock: Clock, hs: HomeServer):
+    def prepare(self, reactor: MemoryReactor, clock: Clock, hs: HomeServer) -> None:
         self.store = hs.get_datastores().main
         self.user_id = self.register_user("foo", "pass")
         self.token = self.login("foo", "pass")
@@ -47,7 +47,7 @@ class ReceiptsBackgroundUpdateStoreTestCase(HomeserverTestCase):
         table: str,
         receipts: Dict[Tuple[str, str, str], Sequence[Dict[str, Any]]],
         expected_unique_receipts: Dict[Tuple[str, str, str], Optional[Dict[str, Any]]],
-    ):
+    ) -> None:
         """Test that the background update to uniqueify non-thread receipts in
         the given receipts table works properly.
 
@@ -154,7 +154,7 @@ class ReceiptsBackgroundUpdateStoreTestCase(HomeserverTestCase):
                     f"Background update did not remove all duplicate receipts from {table}",
                 )
 
-    def test_background_receipts_linearized_unique_index(self):
+    def test_background_receipts_linearized_unique_index(self) -> None:
         """Test that the background update to uniqueify non-thread receipts in
         `receipts_linearized` works properly.
         """
@@ -177,7 +177,7 @@ class ReceiptsBackgroundUpdateStoreTestCase(HomeserverTestCase):
             },
         )
 
-    def test_background_receipts_graph_unique_index(self):
+    def test_background_receipts_graph_unique_index(self) -> None:
         """Test that the background update to uniqueify non-thread receipts in
         `receipts_graph` works properly.
         """