diff --git a/aqt/pinnedmodules.py b/aqt/pinnedmodules.py
index f157861b9..afc39c155 100644
--- a/aqt/pinnedmodules.py
+++ b/aqt/pinnedmodules.py
@@ -26,3 +26,4 @@ import decimal
 import logging
 import logging.handlers
 import logging.config
+import typing