diff --git a/pymobiledevice3/services/installation_proxy.py b/pymobiledevice3/services/installation_proxy.py
index 62d81222a..2f1953317 100644
--- a/pymobiledevice3/services/installation_proxy.py
+++ b/pymobiledevice3/services/installation_proxy.py
@@ -3,7 +3,7 @@
 from io import BytesIO
 from pathlib import Path
 from tempfile import TemporaryDirectory
-from typing import Callable, Optional, Union
+from typing import Callable, Optional
 from zipfile import ZIP_DEFLATED, BadZipFile, ZipFile
 
 from parameter_decorators import str_to_path