diff --git a/server/app.py b/server/app.py
index 90b7351..7a1c958 100644
--- a/server/app.py
+++ b/server/app.py
@@ -22,7 +22,6 @@ from typing import (
     Mapping,
     Optional,
     Sequence,
-    Set,
     Type,
     TypeVar,
     Union,