Problem was that every map had the same modified_at

youmap/views.py

@@ -8,7 +8,7 @@ class Home(TemplateView):
     list_template_name = "chickpea/map_list.html"
 
     def get_context_data(self, **kwargs):
-        maps = Map.objects.order_by('-pk')[:100]
+        maps = Map.objects.order_by('-modified_at')[:100]
         return {
             "maps": maps
         }