diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..b849982
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,18 @@
+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for all configuration options:
+# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+
+version: 2
+updates:
+  - package-ecosystem: "docker" # See documentation for possible values
+    directory: "/" # Location of package manifests
+    schedule:
+      interval: "weekly"
+  # Enable version updates for Actions
+  - package-ecosystem: "github-actions"
+    # Look for `.github/workflows` in the `root` directory
+    directory: "/"
+    # Check for updates once a week
+    schedule:
+      interval: "weekly"      
diff --git a/docker-compose.yaml b/docker-compose.yaml
index 5390bf1..ecc7ec9 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -49,7 +49,7 @@ services:
     - POSTGRES_DB=mailmandb
     - POSTGRES_USER=mailman
     - POSTGRES_PASSWORD=mailmanpass
-    image: postgres:9.6-alpine
+    image: postgres:11-alpine
     volumes:
     - /opt/mailman/database:/var/lib/postgresql/data
     networks:
@@ -62,4 +62,4 @@ networks:
       driver: default
       config:
       -
-        subnet: 172.19.199.0/24
\ No newline at end of file
+        subnet: 172.19.199.0/24
diff --git a/postorius/mailman-web/urls.py b/postorius/mailman-web/urls.py
index 804b9e3..6a9bbaf 100644
--- a/postorius/mailman-web/urls.py
+++ b/postorius/mailman-web/urls.py
@@ -16,19 +16,18 @@
 # You should have received a copy of the GNU General Public License along with
 # Postorius.  If not, see <http://www.gnu.org/licenses/>.
 
-
-from django.conf.urls import include, url
+from django.conf.urls import include
 from django.contrib import admin
-from django.urls import reverse_lazy
+from django.urls import path, reverse_lazy
 from django.views.generic import RedirectView
 
 urlpatterns = [
-    url(r'^$', RedirectView.as_view(
+    path(r'^$', RedirectView.as_view(
         url=reverse_lazy('list_index'),
         permanent=True)),
-    url(r'^postorius/', include('postorius.urls')),
-    url(r'', include('django_mailman3.urls')),
-    url(r'^accounts/', include('allauth.urls')),
+    path(r'postorius/', include('postorius.urls')),
+    path(r'', include('django_mailman3.urls')),
+    path(r'accounts/', include('allauth.urls')),
     # Django admin
-    url(r'^admin/', admin.site.urls),
+    path(r'^admin/', admin.site.urls),
 ]
diff --git a/web/Dockerfile.dev b/web/Dockerfile.dev
index 9b2809c..b43e005 100644
--- a/web/Dockerfile.dev
+++ b/web/Dockerfile.dev
@@ -33,10 +33,11 @@ RUN --mount=type=cache,target=/root/.cache \
         mysqlclient \
         xapian-haystack \
         django-auth-ldap \
-		python-memcached \
+	python-memcached \
+	tzdata \
         diskcache \
         django-utils-six \
-    && python3 -m pip install -U 'Django<3.2' \
+    && python3 -m pip install -U 'Django<4.3' \
     && python3 -m pip install -U \
        git+https://gitlab.com/mailman/django-mailman3 \
     && apk del .build-deps \
diff --git a/web/mailman-web/urls.py b/web/mailman-web/urls.py
index e8bb66c..0e14f66 100644
--- a/web/mailman-web/urls.py
+++ b/web/mailman-web/urls.py
@@ -16,20 +16,19 @@
 # You should have received a copy of the GNU General Public License along with
 # Postorius.  If not, see <http://www.gnu.org/licenses/>.
 
-
-from django.conf.urls import include, url
+from django.conf.urls import include
 from django.contrib import admin
-from django.urls import reverse_lazy
+from django.urls import path, reverse_lazy
 from django.views.generic import RedirectView
 
 urlpatterns = [
-    url(r'^$', RedirectView.as_view(
+    path(r'^$', RedirectView.as_view(
         url=reverse_lazy('list_index'),
         permanent=True)),
-    url(r'^postorius/', include('postorius.urls')),
-    url(r'^hyperkitty/', include('hyperkitty.urls')),
-    url(r'', include('django_mailman3.urls')),
-    url(r'^accounts/', include('allauth.urls')),
+    path(r'postorius/', include('postorius.urls')),
+    path(r'hyperkitty/', include('hyperkitty.urls')),
+    path(r'', include('django_mailman3.urls')),
+    path(r'accounts/', include('allauth.urls')),
     # Django admin
-    url(r'^admin/', admin.site.urls),
+    path(r'^admin/', admin.site.urls),
 ]