diff --git a/greg/models.py b/greg/models.py
index 4fc4f711f8d6d7c8f88a5bf2c8d933696c7d6830..f7f18950a992ce118639fb5c02ad44738c1195a6 100644
--- a/greg/models.py
+++ b/greg/models.py
@@ -93,10 +93,8 @@ class Person(BaseModel):
 
     @property
     def feide_id(self) -> Optional["Identity"]:
-        """The person's Feide ID if they have one registered. """
-        return self.identities.filter(
-            type=Identity.IdentityType.FEIDE_ID
-        ).first()
+        """The person's Feide ID if they have one registered."""
+        return self.identities.filter(type=Identity.IdentityType.FEIDE_ID).first()
 
     @property
     def is_registered(self) -> bool:
@@ -118,8 +116,8 @@ class Person(BaseModel):
         """
         # registration_completed_date is set only after accepting consents
         return (
-                self.registration_completed_date is not None
-                and self.registration_completed_date <= date.today()
+            self.registration_completed_date is not None
+            and self.registration_completed_date <= date.today()
         )
 
     @staticmethod
@@ -160,15 +158,15 @@ class Person(BaseModel):
         authenticity, or trust level of the guest's associated identities.
         """
         return (
-                self.identities.filter(
-                    type__in=[
-                        Identity.IdentityType.NORWEGIAN_NATIONAL_ID_NUMBER,
-                        Identity.IdentityType.PASSPORT_NUMBER,
-                    ],
-                    verified_at__isnull=False,
-                    verified_at__lte=timezone.now(),
-                ).count()
-                >= 1
+            self.identities.filter(
+                type__in=[
+                    Identity.IdentityType.NORWEGIAN_NATIONAL_ID_NUMBER,
+                    Identity.IdentityType.PASSPORT_NUMBER,
+                ],
+                verified_at__isnull=False,
+                verified_at__lte=timezone.now(),
+            ).count()
+            >= 1
         )
 
     @property
diff --git a/gregui/api/serializers/guest.py b/gregui/api/serializers/guest.py
index d22c2e1e524ffca684568047c86a939935f52d80..112b200fed9915223488070fa19723484387c3e8 100644
--- a/gregui/api/serializers/guest.py
+++ b/gregui/api/serializers/guest.py
@@ -67,8 +67,8 @@ class GuestRegisterSerializer(serializers.ModelSerializer):
         # Check that the date of birth is between the interval starting about 100 years ago and last year
         if (
             not today - datetime.timedelta(weeks=100 * 52)
-                < date_of_birth
-                < today - datetime.timedelta(weeks=52)
+            < date_of_birth
+            < today - datetime.timedelta(weeks=52)
         ):
             raise serializers.ValidationError("Invalid date of birth")
 
diff --git a/gregui/api/views/invitation.py b/gregui/api/views/invitation.py
index ce4e013d456863e18c03d32634afecaac93fd2ef..bf32e2e7ef00d8a7f4c06a6df20f27126f6e542e 100644
--- a/gregui/api/views/invitation.py
+++ b/gregui/api/views/invitation.py
@@ -72,8 +72,8 @@ class InvitationView(CreateAPIView, DestroyAPIView):
         person = serializer.save()
 
         for invitationlink in InvitationLink.objects.filter(
-                invitation__role__person_id=person.id,
-                invitation__role__sponsor_id=sponsor_user.sponsor_id,
+            invitation__role__person_id=person.id,
+            invitation__role__sponsor_id=sponsor_user.sponsor_id,
         ):
             send_invite_mail(invitationlink)
 
@@ -236,10 +236,10 @@ class InvitedGuestView(GenericAPIView):
         # If there is a Feide ID registered with the guest, assume that the name is also coming from there
         feide_id = self._get_identity_or_none(person, Identity.IdentityType.FEIDE_ID)
         if not self._only_allowed_fields_in_request(
-                data,
-                self.fields_allowed_to_update_if_invite
-                if feide_id is None
-                else self.fields_allowed_to_update_if_feide,
+            data,
+            self.fields_allowed_to_update_if_invite
+            if feide_id is None
+            else self.fields_allowed_to_update_if_feide,
         ):
             return Response(status=status.HTTP_400_BAD_REQUEST)
 
@@ -289,7 +289,7 @@ class InvitedGuestView(GenericAPIView):
 
     @staticmethod
     def _get_identity_or_none(
-            person: Person, identity_type: Identity.IdentityType
+        person: Person, identity_type: Identity.IdentityType
     ) -> Optional[str]:
         try:
             return person.identities.get(type=identity_type).value