diff --git a/adhocracy4/maps/migrations/0003_alter_areasettings_module.py b/adhocracy4/maps/migrations/0003_alter_areasettings_module.py
new file mode 100644
index 000000000..bef9c6116
--- /dev/null
+++ b/adhocracy4/maps/migrations/0003_alter_areasettings_module.py
@@ -0,0 +1,23 @@
+# Generated by Django 4.0 on 2023-11-07 15:26
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("a4modules", "0008_alter_module_blueprint_type"),
+        ("a4maps", "0002_change_help_text"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="areasettings",
+            name="module",
+            field=models.OneToOneField(
+                on_delete=django.db.models.deletion.CASCADE,
+                related_name="%(class)s_settings",
+                to="a4modules.module",
+            ),
+        ),
+    ]
diff --git a/adhocracy4/modules/migrations/0008_alter_module_blueprint_type.py b/adhocracy4/modules/migrations/0008_alter_module_blueprint_type.py
new file mode 100644
index 000000000..ad2f49fe8
--- /dev/null
+++ b/adhocracy4/modules/migrations/0008_alter_module_blueprint_type.py
@@ -0,0 +1,20 @@
+# Generated by Django 4.0 on 2023-11-07 15:26
+
+import adhocracy4.modules.fields
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("a4modules", "0007_verbose_name_created_modified"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="module",
+            name="blueprint_type",
+            field=adhocracy4.modules.fields.BlueprintTypeField(
+                blank=True, choices=[], max_length=255
+            ),
+        ),
+    ]
diff --git a/adhocracy4/projects/migrations/0040_alter_project_topics.py b/adhocracy4/projects/migrations/0040_alter_project_topics.py
new file mode 100644
index 000000000..cc9a86fa2
--- /dev/null
+++ b/adhocracy4/projects/migrations/0040_alter_project_topics.py
@@ -0,0 +1,28 @@
+# Generated by Django 4.0 on 2023-11-07 15:26
+
+import adhocracy4.projects.fields
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("a4projects", "0039_add_alt_text_to_field"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="project",
+            name="topics",
+            field=adhocracy4.projects.fields.TopicField(
+                choices=[
+                    ("ANT", "Anti-discrimination"),
+                    ("WOR", "Work & economy"),
+                    ("BUI", "Building & living"),
+                ],
+                default="",
+                help_text="Add topics to your project.",
+                max_length=254,
+                verbose_name="Project topics",
+            ),
+        ),
+    ]
diff --git a/changelog/7776.md b/changelog/7776.md
new file mode 100644
index 000000000..d1023b3c9
--- /dev/null
+++ b/changelog/7776.md
@@ -0,0 +1,4 @@
+### Upgraded
+
+- Django from 3.2.20 to 4.0
+  - added migrations for max_length
diff --git a/requirements/base.txt b/requirements/base.txt
index ed4c84536..632f9c548 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -1,5 +1,5 @@
 bleach[css]==6.0.0
-Django==3.2.20
+Django==4.0
 django-allauth==0.54.0
 git+https://github.com/liqd/django-autoslug.git@liqd2212#egg=django-autoslug
 django-ckeditor==6.6.1
diff --git a/tests/apps/ideas/migrations/0006_alter_idea_labels.py b/tests/apps/ideas/migrations/0006_alter_idea_labels.py
new file mode 100644
index 000000000..f5c0c4505
--- /dev/null
+++ b/tests/apps/ideas/migrations/0006_alter_idea_labels.py
@@ -0,0 +1,20 @@
+# Generated by Django 4.0 on 2023-11-07 15:26
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("a4labels", "0003_labelalias"),
+        ("a4test_ideas", "0005_idea_is_bool_test"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="idea",
+            name="labels",
+            field=models.ManyToManyField(
+                related_name="%(app_label)s_%(class)s_label", to="a4labels.Label"
+            ),
+        ),
+    ]
diff --git a/tests/project/urls.py b/tests/project/urls.py
index f91cde19a..189862938 100644
--- a/tests/project/urls.py
+++ b/tests/project/urls.py
@@ -1,5 +1,5 @@
 from django.contrib import admin
-from django.contrib.auth import views
+from django.contrib.auth.views import LoginView
 from django.urls import include
 from django.urls import path
 from rest_framework import routers
@@ -31,6 +31,6 @@
     path("admin/", admin.site.urls),
     path("projects/", include(prj_urls)),
     path("modules/", include(mod_urls)),
-    path("accounts/login", views.LoginView, name="account_login"),
+    path("accounts/login", LoginView.as_view(), name="account_login"),
     path("dashboard/", include(dashboard_urls)),
 ]