diff --git a/Gulpfile.js b/Gulpfile.js
index 4531d699f4..92d1c651df 100644
--- a/Gulpfile.js
+++ b/Gulpfile.js
@@ -117,7 +117,9 @@ async function jsLint() {
   console.log(resultText)
 }
 
-// Get JS minified files from packages
+/* Get JS minified files from packages
+ * Get also sourcemaps for all JS files, required by Django's ManifestStaticFilesStorage since 4.1 (see
+ * https://docs.djangoproject.com/fr/4.2/ref/contrib/staticfiles/#manifeststaticfilesstorage) */
 function jsPackages() {
   return gulp.src([
     require.resolve('jquery/dist/jquery.min.js'),
@@ -126,8 +128,8 @@ function jsPackages() {
     require.resolve('chartjs-adapter-moment/dist/chartjs-adapter-moment.min.js'),
     require.resolve('chart.js/dist/chart.min.js'),
     require.resolve('easymde/dist/easymde.min.js')
-  ])
-    .pipe(gulp.dest('dist/js/'))
+  ], { sourcemaps: true })
+    .pipe(gulp.dest('dist/js/', { sourcemaps: '.' }))
 }
 
 // Generates JS for the website
diff --git a/requirements.txt b/requirements.txt
index 38a729af9a..0cc009dbd2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ beautifulsoup4==4.12.2
 django-crispy-forms==2.0
 django-model-utils==4.3.1
 django-recaptcha==4.0.0
-Django==3.2.23
+Django==4.2.6
 easy-thumbnails[svg]==2.8.5
 factory-boy==3.3.0
 geoip2==4.8.0
diff --git a/zds/featured/views.py b/zds/featured/views.py
index cf0fddc88b..69bbda8e42 100644
--- a/zds/featured/views.py
+++ b/zds/featured/views.py
@@ -336,20 +336,16 @@ def form_valid(self, form):
 
 
 class FeaturedMessageDelete(FeaturedViewMixin, DeleteView):
-    """
-    Delete the featured message.
-    """
-
-    http_method_names = ["post", "delete"]
-    last_message = None
+    """Delete the featured message."""
 
-    def dispatch(self, request, *args, **kwargs):
-        self.last_message = FeaturedMessage.objects.get_last_message()
-        return super().dispatch(request, *args, **kwargs)
+    http_method_names = ["post"]
+    model = FeaturedMessage
 
-    def delete(self, request, *args, **kwargs):
-        if self.last_message:
-            self.last_message.delete()
+    def get_object(self, queryset=None):
+        return FeaturedMessage.objects.get_last_message()
 
+    def form_valid(self, form):
+        if self.object is not None:
+            self.object.delete()
         messages.success(self.request, _("Le message a été supprimé."))
         return redirect(reverse("featured:resource-list"))
diff --git a/zds/tutorialv2/views/containers_extracts.py b/zds/tutorialv2/views/containers_extracts.py
index 7d2493f873..c5661e68cc 100644
--- a/zds/tutorialv2/views/containers_extracts.py
+++ b/zds/tutorialv2/views/containers_extracts.py
@@ -228,11 +228,11 @@ def form_valid(self, form):
 class DeleteContainerOrExtract(LoggedWithReadWriteHability, SingleContentViewMixin, DeleteView):
     model = PublishableContent
     template_name = None
-    http_method_names = ["delete", "post"]
+    http_method_names = ["post"]
     object = None
     versioned_object = None
 
-    def delete(self, request, *args, **kwargs):
+    def form_valid(self, form):
         """delete any object, either Extract or Container"""
         self.object = self.get_object()
         self.versioned_object = self.get_versioned_object()
diff --git a/zds/tutorialv2/views/contents.py b/zds/tutorialv2/views/contents.py
index 018b146899..33da3f42dc 100644
--- a/zds/tutorialv2/views/contents.py
+++ b/zds/tutorialv2/views/contents.py
@@ -29,8 +29,6 @@
 from zds.tutorialv2.models.database import PublishableContent, Validation
 from zds.tutorialv2.utils import init_new_repo
 from zds.tutorialv2.views.authors import RemoveAuthorFromContent
-from zds.tutorialv2.views.goals import EditGoalsForm
-from zds.tutorialv2.views.labels import EditLabelsForm
 from zds.utils.models import get_hat_from_settings
 from zds.mp.utils import send_mp, send_message_mp
 from zds.utils.uuslug_wrapper import slugify
@@ -279,18 +277,14 @@ def form_valid(self, form):
 
 class DeleteContent(LoginRequiredMixin, SingleContentViewMixin, DeleteView):
     model = PublishableContent
-    template_name = None
-    http_method_names = ["delete", "post"]
-    object = None
+    http_method_names = ["post"]
     authorized_for_staff = False  # deletion is creator's privilege
 
     @method_decorator(transaction.atomic)
     def dispatch(self, *args, **kwargs):
         return super().dispatch(*args, **kwargs)
 
-    def delete(self, request, *args, **kwargs):
-        """rewrite delete() function to ensure repository deletion"""
-
+    def form_valid(self, form):
         self.object = self.get_object()
         object_type = self.object.type.lower()
 
@@ -362,4 +356,4 @@ def delete(self, request, *args, **kwargs):
 
             messages.success(self.request, _("Vous avez bien supprimé {}.").format(_type))
 
-        return redirect(reverse(object_type + ":find-" + object_type, args=[request.user.username]))
+        return redirect(reverse(object_type + ":find-" + object_type, args=[self.request.user.username]))