diff --git a/strawberry_django/optimizer.py b/strawberry_django/optimizer.py
index 23fa0642..1611edbe 100644
--- a/strawberry_django/optimizer.py
+++ b/strawberry_django/optimizer.py
@@ -526,7 +526,9 @@ def _get_model_hints(
         if model_field is not None:
             path = f"{prefix}{model_fieldname}"
 
-            if not custom_prefetches and isinstance(model_field, (models.ForeignKey, OneToOneRel)):
+            if not custom_prefetches and isinstance(
+                model_field, (models.ForeignKey, OneToOneRel)
+            ):
                 # only select_related if there is no custom prefetch
                 store.only.append(path)
                 store.select_related.append(path)
@@ -554,7 +556,11 @@ def _get_model_hints(
                     if f_store is not None:
                         cache.setdefault(f_model, []).append((level, f_store))
                         store |= f_store.with_prefix(path, info=info)
-            elif not custom_prefetches and GenericForeignKey and isinstance(model_field, GenericForeignKey):
+            elif (
+                not custom_prefetches
+                and GenericForeignKey
+                and isinstance(model_field, GenericForeignKey)
+            ):
                 # There's not much we can do to optimize generic foreign keys regarding
                 # only/select_related because they can be anything.
                 # Just prefetch_related them
@@ -633,9 +639,13 @@ def _get_model_hints(
                                 if prefetch.queryset is not None:
                                     p_qs = prefetch.queryset
                                 else:
-                                    p_qs = _get_prefetch_queryset(remote_model, field, config, info)
+                                    p_qs = _get_prefetch_queryset(
+                                        remote_model, field, config, info
+                                    )
                                 f_qs = f_store.apply(p_qs, info=info, config=config)
-                                f_prefetch = Prefetch(prefetch.prefetch_through, f_qs, prefetch.to_attr)
+                                f_prefetch = Prefetch(
+                                    prefetch.prefetch_through, f_qs, prefetch.to_attr
+                                )
                                 if prefix:
                                     f_prefetch.add_prefix(prefix)
                                 f_prefetch._optimizer_sentinel = _sentinel  # type: ignore
diff --git a/tests/projects/models.py b/tests/projects/models.py
index 7b89accd..6ea42d88 100644
--- a/tests/projects/models.py
+++ b/tests/projects/models.py
@@ -1,9 +1,9 @@
-from typing import TYPE_CHECKING, Any, Optional, Annotated
+from typing import TYPE_CHECKING, Annotated, Any, Optional
 
 import strawberry
 from django.contrib.auth import get_user_model
 from django.db import models
-from django.db.models import Count, QuerySet, Prefetch
+from django.db.models import Count, Prefetch, QuerySet
 from django.utils.translation import gettext_lazy as _
 from django_choices_field import TextChoicesField
 
@@ -59,17 +59,19 @@ def is_small(self) -> bool:
         prefetch_related=lambda _: Prefetch(
             "milestones",
             to_attr="next_milestones_prop_pf",
-            queryset=Milestone.objects.filter(due_date__isnull=False).order_by("due_date")
+            queryset=Milestone.objects.filter(due_date__isnull=False).order_by(
+                "due_date"
+            ),
         )
     )
-    def next_milestones_property(self) -> list[Annotated['MilestoneType', strawberry.lazy('.schema')]]:
+    def next_milestones_property(
+        self,
+    ) -> list[Annotated["MilestoneType", strawberry.lazy(".schema")]]:
+        """The milestones for the project ordered by their due date
         """
-        The milestones for the project ordered by their due date
-        """
-        if hasattr(self, 'next_milestones_prop_pf'):
+        if hasattr(self, "next_milestones_prop_pf"):
             return self.next_milestones_prop_pf
-        else:
-            return self.milestones.filter(due_date__isnull=False).order_by("due_date")
+        return self.milestones.filter(due_date__isnull=False).order_by("due_date")
 
 
 class Milestone(models.Model):
diff --git a/tests/projects/schema.py b/tests/projects/schema.py
index 7f8b44e4..ef67aac2 100644
--- a/tests/projects/schema.py
+++ b/tests/projects/schema.py
@@ -1,7 +1,7 @@
 import asyncio
 import datetime
 import decimal
-from typing import Iterable, List, Optional, Type, cast, Union
+from typing import Iterable, List, Optional, Type, Union, cast
 
 import strawberry
 from django.contrib.auth import get_user_model
@@ -109,17 +109,17 @@ class ProjectType(relay.Node):
         prefetch_related=lambda _: Prefetch(
             "milestones",
             to_attr="next_milestones_pf",
-            queryset=Milestone.objects.filter(due_date__isnull=False).order_by("due_date")
+            queryset=Milestone.objects.filter(due_date__isnull=False).order_by(
+                "due_date"
+            ),
         )
     )
     def next_milestones(self) -> "list[MilestoneType]":
+        """The milestones for the project ordered by their due date
         """
-        The milestones for the project ordered by their due date
-        """
-        if hasattr(self, 'next_milestones_pf'):
+        if hasattr(self, "next_milestones_pf"):
             return self.next_milestones_pf
-        else:
-            return self.milestones.filter(due_date__isnull=False).order_by("due_date")
+        return self.milestones.filter(due_date__isnull=False).order_by("due_date")
 
 
 @strawberry_django.filter(Milestone, lookups=True)
@@ -314,7 +314,9 @@ class ProjectConnection(ListConnectionWithTotalCount[ProjectType]):
     """Project connection documentation."""
 
 
-ProjectFeedItem = Annotated[Union[IssueType, MilestoneType], strawberry.union('ProjectFeedItem')]
+ProjectFeedItem = Annotated[
+    Union[IssueType, MilestoneType], strawberry.union("ProjectFeedItem")
+]
 
 
 @strawberry.type