1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/http/servlet.py b/synapse/http/servlet.py
index 6ba2ce1e53..bf706b3a8f 100644
--- a/synapse/http/servlet.py
+++ b/synapse/http/servlet.py
@@ -14,7 +14,7 @@
 
 """ This module contains base REST classes for constructing REST servlets. """
 import logging
-from typing import Dict, Iterable, List, Optional, overload
+from typing import Dict, Iterable, List, Optional, Union, overload
 
 from typing_extensions import Literal