diff --git a/pyproject.toml b/pyproject.toml
index d18517b..46a985f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [tool.isort]
 line_length = 120
-multi_line_output = 1
+multi_line_output = 3
 include_trailing_comma = true
 skip = ["migrations", ".venv"]
 
diff --git a/src/sio3pack/django/sinolpack/handler.py b/src/sio3pack/django/sinolpack/handler.py
index f1081f4..62116b2 100644
--- a/src/sio3pack/django/sinolpack/handler.py
+++ b/src/sio3pack/django/sinolpack/handler.py
@@ -5,10 +5,12 @@
 from django.db import transaction
 
 from sio3pack.django.common.handler import DjangoHandler
-from sio3pack.django.sinolpack.models import (SinolpackAdditionalFile,
-                                              SinolpackAttachment,
-                                              SinolpackConfig,
-                                              SinolpackModelSolution,)
+from sio3pack.django.sinolpack.models import (
+    SinolpackAdditionalFile,
+    SinolpackAttachment,
+    SinolpackConfig,
+    SinolpackModelSolution,
+)
 
 
 class SinolpackDjangoHandler(DjangoHandler):