diff --git a/src/forensicsim/backend.py b/src/forensicsim/backend.py
index 276d255..11c1d64 100644
--- a/src/forensicsim/backend.py
+++ b/src/forensicsim/backend.py
@@ -23,7 +23,7 @@
 """
 
 import json
-import typing
+from typing import Any, Optional
 from pathlib import Path
 
 from ccl_chromium_reader import (