diff --git a/api/onnx_web/chain/persist_disk.py b/api/onnx_web/chain/persist_disk.py
index 3be8a0d0..9a5f0cd0 100644
--- a/api/onnx_web/chain/persist_disk.py
+++ b/api/onnx_web/chain/persist_disk.py
@@ -1,5 +1,4 @@
 from logging import getLogger
-from typing import List
 
 from PIL import Image