diff --git a/judge/judger_controller/tasks.py b/judge/judger_controller/tasks.py
index ab6040f..3313b52 100644
--- a/judge/judger_controller/tasks.py
+++ b/judge/judger_controller/tasks.py
@@ -1,8 +1,8 @@
 # coding=utf-8
 # from __future__ import absolute_import
+import subprocess
 import pymongo
 from bson import ObjectId
-import subprocess32 as subprocess
 from ..judger.result import result
 from ..judger_controller.celery import app
 from settings import docker_config, source_code_dir, test_case_dir, celery_mongodb_config
diff --git a/requirements.txt b/requirements.txt
index 324d7b0..885d7b2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,5 +7,4 @@ django-rest-swagger
 celery
 gunicorn
 coverage
-subprocess32
 pymongo
\ No newline at end of file