diff --git a/app/api/v1/auth.py b/app/api/v1/auth.py
index be135a5..e3728be 100644
--- a/app/api/v1/auth.py
+++ b/app/api/v1/auth.py
@@ -12,12 +12,17 @@ from __future__ import annotations
 
 import logging
 
-from fastapi import APIRouter, HTTPException, Request, status
+from fastapi import APIRouter, HTTPException, Request
 from sqlalchemy.exc import IntegrityError
 
 from app.api.deps import CurrentUser, DbSession
 from app.core import test_account
-from app.core.ratelimit import enforce_rate_limit
+from app.core.ratelimit import (
+    RateLimitRule,
+    check_rate_limits,
+    enforce_rate_limit,
+    record_rate_limits,
+)
 from app.core.security import (
     TokenError,
     create_bind_ticket,
@@ -28,13 +33,6 @@ from app.core.security import (
     issue_token_pair,
 )
 from app.integrations import wxpay
-from app.core.ratelimit import (
-    RateLimitRule,
-    check_rate_limits,
-    enforce_rate_limit,
-    record_rate_limits,
-)
-from app.core.security import TokenError, decode_token, issue_token_pair
 from app.integrations.jiguang import JiguangError, mask_phone, verify_and_get_phone
 from app.integrations.sms import SmsError, send_code, verify_code
 from app.repositories import onboarding as onboarding_repo