diff --git a/pyconkr/settings-dev.py b/pyconkr/settings-dev.py
index 67b5f46..c9e0112 100644
--- a/pyconkr/settings-dev.py
+++ b/pyconkr/settings-dev.py
@@ -15,8 +15,8 @@
 }
 
 # django-storages: S3
-DEFAULT_FILE_STORAGE = 'storages.backends.s3boto3.S3Boto3Storage'
-STATICFILES_STORAGE = 'storages.backends.s3boto3.S3StaticStorage'
+DEFAULT_FILE_STORAGE = "storages.backends.s3boto3.S3Boto3Storage"
+STATICFILES_STORAGE = "storages.backends.s3boto3.S3StaticStorage"
 AWS_S3_ACCESS_KEY_ID = os.getenv("AWS_S3_ACCESS_KEY_ID")
 AWS_S3_SECRET_ACCESS_KEY = os.getenv("AWS_S3_SECRET_ACCESS_KEY")
 AWS_STORAGE_BUCKET_NAME = "pyconkr-api-v2-static-dev"
diff --git a/pyconkr/settings-prod.py b/pyconkr/settings-prod.py
index e266e8a..44fae24 100644
--- a/pyconkr/settings-prod.py
+++ b/pyconkr/settings-prod.py
@@ -15,8 +15,8 @@
 }
 
 # django-storages: S3
-DEFAULT_FILE_STORAGE = 'storages.backends.s3boto3.S3Boto3Storage'
-STATICFILES_STORAGE = 'storages.backends.s3boto3.S3StaticStorage'
+DEFAULT_FILE_STORAGE = "storages.backends.s3boto3.S3Boto3Storage"
+STATICFILES_STORAGE = "storages.backends.s3boto3.S3StaticStorage"
 AWS_S3_ACCESS_KEY_ID = os.getenv("AWS_S3_ACCESS_KEY_ID")
 AWS_S3_SECRET_ACCESS_KEY = os.getenv("AWS_S3_SECRET_ACCESS_KEY")
 AWS_STORAGE_BUCKET_NAME = "pyconkr-api-v2-static"
diff --git a/pyconkr/settings.py b/pyconkr/settings.py
index 5c49802..6b0b6b1 100644
--- a/pyconkr/settings.py
+++ b/pyconkr/settings.py
@@ -37,7 +37,6 @@
     "django.contrib.sessions",
     "django.contrib.messages",
     "django.contrib.staticfiles",
-
     # djangorestframework
     "rest_framework",
 ]
diff --git a/pyconkr/urls.py b/pyconkr/urls.py
index e91cdd0..ecbd711 100644
--- a/pyconkr/urls.py
+++ b/pyconkr/urls.py
@@ -17,6 +17,6 @@
 from django.urls import path, include
 
 urlpatterns = [
-    path('api-auth/', include('rest_framework.urls')),
+    path("api-auth/", include("rest_framework.urls")),
     path("admin/", admin.site.urls),
 ]