diff --git a/judge/judger/client.py b/judge/judger/client.py
index fc7d0b9..4b0ec02 100644
--- a/judge/judger/client.py
+++ b/judge/judger/client.py
@@ -170,4 +170,4 @@ class JudgeClient(object):
         # http://stackoverflow.com/questions/25382455/python-notimplementederror-pool-objects-cannot-be-passed-between-processes
         self_dict = self.__dict__.copy()
         del self_dict['_pool']
-        return self_dict
\ No newline at end of file
+        return self_dict
diff --git a/judge/judger/settings.py b/judge/judger/settings.py
index 1f15b96..5f8d7ce 100644
--- a/judge/judger/settings.py
+++ b/judge/judger/settings.py
@@ -17,7 +17,7 @@ judger_workspace = "/var/judger/"
 
 # 这个是在docker 中访问数据库 ip 不一定和web服务器还有celery的一样
 submission_db = {
-    "host": "192.168.42.1",
+    "host": "10.172.22.50",#"192.168.42.1",
     "port": 3306,
     "db": "oj_submission",
     "user": "root",