diff --git a/routstr/upstream/base.py b/routstr/upstream/base.py
index ade0a6de..8dc5a8d1 100644
--- a/routstr/upstream/base.py
+++ b/routstr/upstream/base.py
@@ -3,7 +3,6 @@ from __future__ import annotations
 import asyncio
 import json
 import re
-import time
 import traceback
 from collections.abc import AsyncGenerator
 from typing import TYPE_CHECKING, Mapping