diff --git a/sf_bpm_api/models/http.py b/sf_bpm_api/models/http.py
index dfe6c75c..44001357 100644
--- a/sf_bpm_api/models/http.py
+++ b/sf_bpm_api/models/http.py
@@ -1,13 +1,10 @@
 # -*- coding: utf-8 -*-
-import json
 import logging
-import base64
 import datetime
 import time
 import hashlib
 from odoo import fields, models, api
 from odoo.http import request, AuthenticationError
-import redis
 
 __author__ = 'jinling.yang'