diff --git a/account/models.py b/account/models.py
index 1ba842dc..6c849ddb 100644
--- a/account/models.py
+++ b/account/models.py
@@ -2,7 +2,7 @@
 from django.db import models
 from django.contrib.auth.models import AbstractBaseUser
 
-from utils.models import JsonField
+from jsonfield import JSONField
 
 
 class AdminGroup(models.Model):
@@ -33,7 +33,7 @@ class User(AbstractBaseUser):
     # 0代表不是管理员 1是普通管理员 2是超级管理员
     admin_type = models.IntegerField(default=0)
     # JSON字典用来表示该用户的问题的解决状态 1为ac，2为正在进行
-    problems_status = JsonField(default={})
+    problems_status = JSONField(default={})
     # 找回密码用的token
     # reset_password_token = models.CharField(max_length=40, blank=True, null=True)
 
diff --git a/contest/models.py b/contest/models.py
index 1897eb76..3ef70308 100644
--- a/contest/models.py
+++ b/contest/models.py
@@ -5,7 +5,8 @@ from django.utils.timezone import now
 from account.models import User
 from problem.models import AbstractProblem
 from group.models import Group
-from utils.models import RichTextField, JsonField
+from utils.models import RichTextField
+from jsonfield import JSONField
 from judge.judger.result import result
 
 
@@ -117,7 +118,7 @@ class ContestRank(models.Model):
     total_time = models.IntegerField(default=0)
     # 数据结构{23: {"is_ac": True, "ac_time": 8999, "error_number": 2, "is_first_ac": True}}
     # key 是比赛题目的id
-    submission_info = JsonField(default={})
+    submission_info = JSONField(default={})
 
     def update_rank(self, submission):
         if not submission.contest_id or submission.contest_id != self.contest_id:
diff --git a/dockerfiles/oj_web_server/requirements.txt b/dockerfiles/oj_web_server/requirements.txt
index b22146d0..a6cf75ff 100644
--- a/dockerfiles/oj_web_server/requirements.txt
+++ b/dockerfiles/oj_web_server/requirements.txt
@@ -9,4 +9,5 @@ gunicorn
 coverage
 django-extensions
 supervisor
-pillow
\ No newline at end of file
+pillow
+jsonfield
\ No newline at end of file