diff --git a/apps/activity/tests/test_activities.py b/apps/activity/tests/test_activities.py
index db83fb0e..99eb2ffb 100644
--- a/apps/activity/tests/test_activities.py
+++ b/apps/activity/tests/test_activities.py
@@ -7,7 +7,6 @@ from django.contrib.auth.models import User
 from django.test import TestCase
 from django.urls import reverse
 from django.utils import timezone
-
 from activity.models import Activity, ActivityType, Guest, Entry
 from member.models import Club
 
diff --git a/apps/note/tables.py b/apps/note/tables.py
index 0ca50306..f05edc96 100644
--- a/apps/note/tables.py
+++ b/apps/note/tables.py
@@ -46,7 +46,8 @@ class HistoryTable(tables.Table):
         }
     )
 
-    created_at = tables.DateTimeColumn(format='Y-m-d H:i:s',
+    created_at = tables.DateTimeColumn(
+        format='Y-m-d H:i:s',
         attrs={
             "td": {
                 "class": "text-nowrap",
diff --git a/apps/treasury/tests/test_treasury.py b/apps/treasury/tests/test_treasury.py
index 343b91ec..580cfb2d 100644
--- a/apps/treasury/tests/test_treasury.py
+++ b/apps/treasury/tests/test_treasury.py
@@ -7,7 +7,6 @@ from django.core.exceptions import ValidationError
 from django.db.models import Q
 from django.test import TestCase
 from django.urls import reverse
-
 from member.models import Membership, Club
 from note.models import SpecialTransaction, NoteSpecial, Transaction
 from treasury.models import Invoice, Product, Remittance, RemittanceType, SogeCredit