diff --git a/tests/integration/test_wallet_authentication.py b/tests/integration/test_wallet_authentication.py
index eafc3666..1b9d5979 100644
--- a/tests/integration/test_wallet_authentication.py
+++ b/tests/integration/test_wallet_authentication.py
@@ -3,7 +3,6 @@ Integration tests for wallet authentication system including API key generation
 Tests POST /v1/wallet/topup endpoint and authorization header validation.
 """
 
-import hashlib
 from datetime import datetime, timedelta
 from typing import Any