diff --git a/aleksis/apps/chronos/frontend/components/AmendLesson.vue b/aleksis/apps/chronos/frontend/components/AmendLesson.vue
index 3b8c2a1a8bdff8bfbb38b8e4e1bda35a97b04837..1d6ac1fadd0570fdf85aeb429bebc0ed3a210e6c 100644
--- a/aleksis/apps/chronos/frontend/components/AmendLesson.vue
+++ b/aleksis/apps/chronos/frontend/components/AmendLesson.vue
@@ -3,27 +3,28 @@
     <edit-button
       i18n-key="chronos.event.amend.edit_button"
       @click="edit = true"
-      />
+    />
     <delete-button
       v-if="selectedEvent.meta.amended"
       i18n-key="chronos.event.amend.delete_button"
       @click="deleteEvent = true"
-      />
+    />
     <dialog-object-form
       v-model="edit"
       :fields="fields"
       :is-create="!selectedEvent.meta.amended"
-      createItemI18nKey="chronos.event.amend.title"
+      create-item-i18n-key="chronos.event.amend.title"
       :gql-create-mutation="gqlCreateMutation"
       :get-create-data="transformCreateData"
       :default-item="defaultItem"
-      editItemI18nKey="chronos.event.amend.title"
+      edit-item-i18n-key="chronos.event.amend.title"
       :gql-patch-mutation="gqlPatchMutation"
       :get-patch-data="transformPatchData"
       :edit-item="initPatchData"
       @cancel="open = false"
       @save="updateOnSave()"
-      >
+    >
+      <!-- eslint-disable-next-line vue/valid-v-slot -->
       <template #subject.field="{ attrs, on, item }">
         <v-autocomplete
           :disabled="item.cancelled"
@@ -32,8 +33,9 @@
           item-value="id"
           v-bind="attrs"
           v-on="on"
-          />
+        />
       </template>
+      <!-- eslint-disable-next-line vue/valid-v-slot -->
       <template #teachers.field="{ attrs, on, item }">
         <v-autocomplete
           :disabled="item.cancelled"
@@ -45,8 +47,9 @@
           v-on="on"
           chips
           deletable-chips
-          />
+        />
       </template>
+      <!-- eslint-disable-next-line vue/valid-v-slot -->
       <template #rooms.field="{ attrs, on, item }">
         <v-autocomplete
           :disabled="item.cancelled"
@@ -58,22 +61,24 @@
           v-on="on"
           chips
           deletable-chips
-          />
+        />
       </template>
+      <!-- eslint-disable-next-line vue/valid-v-slot -->
       <template #cancelled.field="{ attrs, on }">
         <v-checkbox v-bind="attrs" v-on="on" />
       </template>
+      <!-- eslint-disable-next-line vue/valid-v-slot -->
       <template #comment.field="{ attrs, on }">
         <v-textarea v-bind="attrs" v-on="on" />
       </template>
     </dialog-object-form>
     <delete-dialog
-      deleteSuccessMessageI18nKey="chronos.event.amend.delete_success"
+      delete-success-message-i18n-key="chronos.event.amend.delete_success"
       :gql-delete-mutation="gqlDeleteMutation"
       v-model="deleteEvent"
       :items="[selectedEvent.meta]"
       @save="updateOnSave()"
-      >
+    >
       <template #title>
         {{ $t("chronos.event.amend.delete_dialog") }}
       </template>
@@ -109,7 +114,7 @@ export default {
     selectedEvent: {
       type: Object,
       required: true,
-    }
+    },
   },
   data() {
     return {
@@ -165,7 +170,7 @@ export default {
       };
     },
     updateOnSave() {
-      this.$emit('refreshCalendar');
+      this.$emit("refreshCalendar");
       this.model = false;
     },
   },
@@ -174,7 +179,9 @@ export default {
       return {
         id: this.selectedEvent.meta.id,
         subject: this.selectedEvent.meta.subject?.id.toString(),
-        teachers: this.selectedEvent.meta.teachers.map((teacher) => teacher.id.toString()),
+        teachers: this.selectedEvent.meta.teachers.map((teacher) =>
+          teacher.id.toString(),
+        ),
         rooms: this.selectedEvent.meta.rooms.map((room) => room.id.toString()),
         cancelled: this.selectedEvent.meta.cancelled,
         comment: this.selectedEvent.meta.comment,
diff --git a/aleksis/apps/chronos/models.py b/aleksis/apps/chronos/models.py
index 12df770fc553cc7bb969a5de1467a66d96dc2c70..7d14c0f74e45c76418a5b27276f09779ce3d4cc6 100644
--- a/aleksis/apps/chronos/models.py
+++ b/aleksis/apps/chronos/models.py
@@ -1461,7 +1461,10 @@ class LessonEvent(CalendarEvent):
             elif request:
                 title += " · " + reference_object.teacher_names_with_amends
             else:
-                title += f" · {reference_object.group_names} · {reference_object.teacher_names_with_amends}"
+                title += (
+                    f" · {reference_object.group_names} · "
+                    + f"{reference_object.teacher_names_with_amends}"
+                )
             if reference_object.rooms.all().exists():
                 title += " · " + reference_object.room_names_with_amends
             return title
diff --git a/aleksis/apps/chronos/schema/__init__.py b/aleksis/apps/chronos/schema/__init__.py
index 713155204b2047103a7c1e111cf9b3d0a1e53662..f62355e35af5da2b9e23faf4c3ff192678826fdb 100644
--- a/aleksis/apps/chronos/schema/__init__.py
+++ b/aleksis/apps/chronos/schema/__init__.py
@@ -2,7 +2,11 @@ from datetime import timezone
 
 import graphene
 from graphene_django import DjangoObjectType
-from graphene_django_cud.mutations import DjangoBatchCreateMutation, DjangoBatchDeleteMutation, DjangoBatchPatchMutation
+from graphene_django_cud.mutations import (
+    DjangoBatchCreateMutation,
+    DjangoBatchDeleteMutation,
+    DjangoBatchPatchMutation,
+)
 
 from aleksis.core.models import CalendarEvent, Group, Person, Room
 
@@ -97,7 +101,7 @@ class AmendLessonBatchCreateMutation(DatetimeTimezoneMixin, DjangoBatchCreateMut
         )
 
     @classmethod
-    def before_save(cls, root, info, input, created_objects):
+    def before_save(cls, root, info, input, created_objects):  # noqa: A002
         for obj in created_objects:
             obj.timezone = obj.amends.timezone
         return created_objects
@@ -110,7 +114,7 @@ class AmendLessonBatchPatchMutation(DatetimeTimezoneMixin, DjangoBatchPatchMutat
         only_fields = ("subject", "teachers", "groups", "rooms", "cancelled", "comment")
 
     @classmethod
-    def before_save(cls, root, info, input, updated_objects):
+    def before_save(cls, root, info, input, updated_objects):  # noqa: A002
         for obj in updated_objects:
             obj.timezone = obj.amends.timezone
         return updated_objects