diff --git a/beat/web/statistics/migrations/0001_initial.py b/beat/web/statistics/migrations/0001_initial.py
index 3c2e743167588f175c32d590beb601a4061774ad..3806905c1a96c2dba7a8c0b00bf74e1d4d9d2afd 100644
--- a/beat/web/statistics/migrations/0001_initial.py
+++ b/beat/web/statistics/migrations/0001_initial.py
@@ -27,32 +27,38 @@
 
 from __future__ import unicode_literals
 
-from django.db import migrations, models
+from django.db import migrations
+from django.db import models
 
 
 class Migration(migrations.Migration):
 
-    dependencies = [
-    ]
+    dependencies = []
 
     operations = [
         migrations.CreateModel(
-            name='HourlyStatistics',
+            name="HourlyStatistics",
             fields=[
-                ('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
-                ('date', models.DateField()),
-                ('hour', models.IntegerField()),
-                ('cpu_time', models.FloatField(default=0)),
-                ('max_memory', models.BigIntegerField(default=0)),
-                ('data_read_size', models.BigIntegerField(default=0)),
-                ('data_read_nb_blocks', models.IntegerField(default=0)),
-                ('data_read_time', models.FloatField(default=0)),
-                ('data_written_size', models.BigIntegerField(default=0)),
-                ('data_written_nb_blocks', models.IntegerField(default=0)),
-                ('data_written_time', models.FloatField(default=0)),
+                (
+                    "id",
+                    models.AutoField(
+                        verbose_name="ID",
+                        serialize=False,
+                        auto_created=True,
+                        primary_key=True,
+                    ),
+                ),
+                ("date", models.DateField()),
+                ("hour", models.IntegerField()),
+                ("cpu_time", models.FloatField(default=0)),
+                ("max_memory", models.BigIntegerField(default=0)),
+                ("data_read_size", models.BigIntegerField(default=0)),
+                ("data_read_nb_blocks", models.IntegerField(default=0)),
+                ("data_read_time", models.FloatField(default=0)),
+                ("data_written_size", models.BigIntegerField(default=0)),
+                ("data_written_nb_blocks", models.IntegerField(default=0)),
+                ("data_written_time", models.FloatField(default=0)),
             ],
-            options={
-                'verbose_name_plural': 'Hourly statistics',
-            },
+            options={"verbose_name_plural": "Hourly statistics"},
         ),
     ]