diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 7194d72e..8c5510eb 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -17,10 +17,10 @@ repos:
     - id: pyupgrade
       args: ['--keep-percent-format', '--py37-plus']
 -   repo: https://github.com/adamchainz/django-upgrade
-    rev: 1.10.0
+    rev: 1.13.0
     hooks:
     - id: django-upgrade
-      args: ['--target-version', '2.2']
+      args: ['--target-version', '3.2']
 - repo: https://github.com/rtts/djhtml
   rev: 'v1.5.2'
   hooks:
diff --git a/README b/README
index f867fa5b..398ee3b1 100644
--- a/README
+++ b/README
@@ -46,7 +46,7 @@ pyupgrade is used to automatically upgrade syntax, using those parameters:
 
 django-upgrade is used to automatically upgrade Django syntax, using those parameters:
 
-    django-upgrade --target-version 2.2
+    django-upgrade --target-version 3.2
 
 djhtml is used to automatically indent html files, using those parameters:
 
diff --git a/chrono/agendas/models.py b/chrono/agendas/models.py
index 9b903f69..12f397b5 100644
--- a/chrono/agendas/models.py
+++ b/chrono/agendas/models.py
@@ -25,7 +25,6 @@ import sys
 import uuid
 from contextlib import contextmanager
 
-import django
 import requests
 import vobject
 from dateutil.relativedelta import SU, relativedelta
@@ -51,7 +50,7 @@ from django.db.models import (
     Subquery,
     Value,
 )
-from django.db.models.functions import Cast, Coalesce, Concat, ExtractWeek, ExtractWeekDay
+from django.db.models.functions import Cast, Coalesce, Concat, ExtractWeek, ExtractWeekDay, JSONObject
 from django.template import Context, Template, TemplateSyntaxError, VariableDoesNotExist, engines
 from django.urls import reverse
 from django.utils import functional
@@ -1697,22 +1696,10 @@ class Event(models.Model):
         if agendas:
             overlapping_events = overlapping_events.filter(agenda__in=agendas)
 
-        if django.VERSION >= (3, 2):
-            from django.db.models.functions import JSONObject
-
-            json_object = JSONObject(
-                slug=F('computed_slug'),
-                days=F('recurrence_days'),
-            )
-        else:
-            json_object = Func(
-                Value('slug'),
-                'computed_slug',
-                Value('days'),
-                'recurrence_days',
-                function='jsonb_build_object',
-                output_field=models.JSONField(),
-            )
+        json_object = JSONObject(
+            slug=F('computed_slug'),
+            days=F('recurrence_days'),
+        )
 
         return qs.annotate(
             overlaps=ArraySubquery(
diff --git a/chrono/settings.py b/chrono/settings.py
index df0e90b9..6e909fd2 100644
--- a/chrono/settings.py
+++ b/chrono/settings.py
@@ -83,7 +83,7 @@ WSGI_APPLICATION = 'chrono.wsgi.application'
 
 DATABASES = {
     'default': {
-        'ENGINE': 'django.db.backends.postgresql_psycopg2',
+        'ENGINE': 'django.db.backends.postgresql',
     }
 }
 
diff --git a/chrono/urls.py b/chrono/urls.py
index 6d93e605..68733783 100644
--- a/chrono/urls.py
+++ b/chrono/urls.py
@@ -28,15 +28,15 @@ from .views import LoginView, LogoutView, homepage
 urlpatterns = [
     path('', homepage, name='home'),
     re_path(r'^manage/', decorated_includes(login_required, include(chrono_manager_urls))),
-    re_path(r'^api/', include(chrono_api_urls)),
+    path('api/', include(chrono_api_urls)),
     path('logout/', LogoutView.as_view(), name='auth_logout'),
     path('login/', LoginView.as_view(), name='auth_login'),
 ]
 
 if 'mellon' in settings.INSTALLED_APPS:
     urlpatterns.append(
-        re_path(
-            r'^accounts/mellon/',
+        path(
+            'accounts/mellon/',
             include('mellon.urls'),
             kwargs={
                 'template_base': 'chrono/manager_base.html',
@@ -48,7 +48,7 @@ if settings.DEBUG and 'debug_toolbar' in settings.INSTALLED_APPS:
     import debug_toolbar  # pylint: disable=import-error
 
     urlpatterns = [
-        re_path(r'^__debug__/', include(debug_toolbar.urls)),
+        path('__debug__/', include(debug_toolbar.urls)),
     ] + urlpatterns
 
 # static and media files
diff --git a/tests/settings.py b/tests/settings.py
index 18aa3d4f..045919fd 100644
--- a/tests/settings.py
+++ b/tests/settings.py
@@ -10,7 +10,7 @@ REST_FRAMEWORK = {
 
 DATABASES = {
     'default': {
-        'ENGINE': 'django.db.backends.postgresql_psycopg2',
+        'ENGINE': 'django.db.backends.postgresql',
         'TEST': {
             'NAME': 'chrono-test-%s' % os.environ.get("BRANCH_NAME", "").replace('/', '-')[:45],
         },