diff --git a/judge_dispatcher/migrations/0001_initial.py b/judge_dispatcher/migrations/0001_initial.py
new file mode 100644
index 00000000..e85330ed
--- /dev/null
+++ b/judge_dispatcher/migrations/0001_initial.py
@@ -0,0 +1,41 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='JudgeServer',
+            fields=[
+                ('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
+                ('ip', models.GenericIPAddressField()),
+                ('port', models.IntegerField()),
+                ('max_instance_number', models.IntegerField()),
+                ('left_instance_number', models.IntegerField()),
+                ('workload', models.IntegerField(default=0)),
+                ('token', models.CharField(max_length=30)),
+                ('lock', models.BooleanField(default=False)),
+                ('status', models.BooleanField(default=True)),
+            ],
+            options={
+                'db_table': 'judge_server',
+            },
+        ),
+        migrations.CreateModel(
+            name='JudgeWaitingQueue',
+            fields=[
+                ('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
+                ('submission_id', models.CharField(max_length=40)),
+                ('create_time', models.DateTimeField(auto_now_add=True)),
+            ],
+            options={
+                'db_table': 'judge_waiting_queue',
+            },
+        ),
+    ]
diff --git a/judge_dispatcher/migrations/__init__.py b/judge_dispatcher/migrations/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/submission/migrations/0007_auto_20151207_1645.py b/submission/migrations/0007_auto_20151207_1645.py
new file mode 100644
index 00000000..a053d98c
--- /dev/null
+++ b/submission/migrations/0007_auto_20151207_1645.py
@@ -0,0 +1,24 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('submission', '0006_submission_shared'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='submission',
+            name='judge_end_time',
+            field=models.IntegerField(null=True, blank=True),
+        ),
+        migrations.AddField(
+            model_name='submission',
+            name='judge_start_time',
+            field=models.IntegerField(null=True, blank=True),
+        ),
+    ]