diff --git a/aleksis/apps/alsijil/migrations/0001_initial.py b/aleksis/apps/alsijil/migrations/0001_initial.py
index 193219608828ec4487f1247776b0ae503559fa13..4a88b98b89eb6b5ed6aa914096c032b689710bde 100644
--- a/aleksis/apps/alsijil/migrations/0001_initial.py
+++ b/aleksis/apps/alsijil/migrations/0001_initial.py
@@ -1,6 +1,5 @@
 # Generated by Django 3.0.6 on 2020-05-29 10:29
 
-import django.contrib.postgres.fields.jsonb
 import django.contrib.sites.managers
 import django.db.models.deletion
 from django.db import migrations, models
@@ -33,7 +32,7 @@ class Migration(migrations.Migration):
                 ),
                 (
                     "extended_data",
-                    django.contrib.postgres.fields.jsonb.JSONField(
+                    models.JSONField(
                         default=dict, editable=False
                     ),
                 ),
@@ -92,7 +91,7 @@ class Migration(migrations.Migration):
                 ),
                 (
                     "extended_data",
-                    django.contrib.postgres.fields.jsonb.JSONField(
+                    models.JSONField(
                         default=dict, editable=False
                     ),
                 ),
@@ -140,7 +139,7 @@ class Migration(migrations.Migration):
                 ],
                 "unique_together": {("lesson_period", "week", "person")},
             },
-            managers=[("objects", django.contrib.sites.managers.CurrentSiteManager()),],
+            managers=[],
         ),
         migrations.CreateModel(
             name="LessonDocumentation",
@@ -156,7 +155,7 @@ class Migration(migrations.Migration):
                 ),
                 (
                     "extended_data",
-                    django.contrib.postgres.fields.jsonb.JSONField(
+                    models.JSONField(
                         default=dict, editable=False
                     ),
                 ),
@@ -202,6 +201,6 @@ class Migration(migrations.Migration):
                 ],
                 "unique_together": {("lesson_period", "week")},
             },
-            managers=[("objects", django.contrib.sites.managers.CurrentSiteManager()),],
+            managers=[],
         ),
     ]
diff --git a/aleksis/apps/alsijil/migrations/0002_excuse_type.py b/aleksis/apps/alsijil/migrations/0002_excuse_type.py
index 2a752b0f0be93fd404ae52cda35bc7f09bd71e46..395d2e323cb3396f434da5e0c3ebef768589331b 100644
--- a/aleksis/apps/alsijil/migrations/0002_excuse_type.py
+++ b/aleksis/apps/alsijil/migrations/0002_excuse_type.py
@@ -1,6 +1,5 @@
 # Generated by Django 3.0.8 on 2020-07-10 10:46
 
-import django.contrib.postgres.fields.jsonb
 import django.contrib.sites.managers
 import django.db.models.deletion
 from django.db import migrations, models
@@ -28,7 +27,7 @@ class Migration(migrations.Migration):
                 ),
                 (
                     "extended_data",
-                    django.contrib.postgres.fields.jsonb.JSONField(
+                    models.JSONField(
                         default=dict, editable=False
                     ),
                 ),
diff --git a/aleksis/apps/alsijil/migrations/0003_extra_mark.py b/aleksis/apps/alsijil/migrations/0003_extra_mark.py
index 177d5cc8f8f5d4286fe36e3c31d04c026bec5ee0..e0da8d97ef6b5ec1b1e45f9e6e6f976864907626 100644
--- a/aleksis/apps/alsijil/migrations/0003_extra_mark.py
+++ b/aleksis/apps/alsijil/migrations/0003_extra_mark.py
@@ -1,6 +1,5 @@
 # Generated by Django 3.0.8 on 2020-07-12 12:43
 
-import django.contrib.postgres.fields.jsonb
 import django.contrib.sites.managers
 import django.db.models.deletion
 from django.db import migrations, models
@@ -28,7 +27,7 @@ class Migration(migrations.Migration):
                 ),
                 (
                     "extended_data",
-                    django.contrib.postgres.fields.jsonb.JSONField(
+                    models.JSONField(
                         default=dict, editable=False
                     ),
                 ),
diff --git a/aleksis/apps/alsijil/migrations/0008_global_permissions.py b/aleksis/apps/alsijil/migrations/0008_global_permissions.py
index 917f6f6143b2059daa3f757fdcbe5352c4db8d77..a7d5ba1e39ef682dab13b242467621ebf8fd033d 100644
--- a/aleksis/apps/alsijil/migrations/0008_global_permissions.py
+++ b/aleksis/apps/alsijil/migrations/0008_global_permissions.py
@@ -18,7 +18,6 @@ class Migration(migrations.Migration):
                 ('extended_data', models.JSONField(default=dict, editable=False)),
             ],
             options={
-                "default_permissions": (),
                 'permissions': (('view_week', 'Can view week overview'), ('register_absence', 'Can register absence'), ('list_personal_note_filters', 'Can list all personal note filters')),
                 'managed': False,
             },
diff --git a/aleksis/apps/alsijil/migrations/0010_events_extra_lessons.py b/aleksis/apps/alsijil/migrations/0010_events_extra_lessons.py
index 34611bf386a55de933219217c7fabb0709f2f14e..f0459292f8d754f1eb98522661dd7b630bd5f69c 100644
--- a/aleksis/apps/alsijil/migrations/0010_events_extra_lessons.py
+++ b/aleksis/apps/alsijil/migrations/0010_events_extra_lessons.py
@@ -55,7 +55,7 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='lessondocumentation',
             name='year',
-            field=models.IntegerField(blank=True, default=aleksis.apps.chronos.util.date.get_current_year, null=True, verbose_name='Year'),
+            field=models.IntegerField(blank=True, null=True, verbose_name='Year'),
         ),
         migrations.AlterField(
             model_name='personalnote',
@@ -70,7 +70,7 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='personalnote',
             name='year',
-            field=models.IntegerField(blank=True, default=aleksis.apps.chronos.util.date.get_current_year, null=True, verbose_name='Year'),
+            field=models.IntegerField(blank=True, null=True, verbose_name='Year'),
         ),
         migrations.AlterUniqueTogether(
             name='lessondocumentation',