1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/storage/database.py b/synapse/storage/database.py
index 9a6d2b21f9..9452368bf0 100644
--- a/synapse/storage/database.py
+++ b/synapse/storage/database.py
@@ -20,6 +20,7 @@ from time import monotonic as monotonic_time
 from typing import (
     Any,
     Callable,
+    Collection,
     Dict,
     Iterable,
     Iterator,
@@ -48,7 +49,6 @@ from synapse.metrics.background_process_metrics import run_as_background_process
 from synapse.storage.background_updates import BackgroundUpdater
 from synapse.storage.engines import BaseDatabaseEngine, PostgresEngine, Sqlite3Engine
 from synapse.storage.types import Connection, Cursor
-from synapse.types import Collection
 
 # python 3 does not have a maximum int value
 MAX_TXN_ID = 2 ** 63 - 1