diff --git a/requirements.txt b/requirements.txt
index 4c9c661..b45a49c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,14 +1,14 @@
 asgiref==3.8.1
 Brotli==1.1.0
-click==8.2.1
+click==8.1.8
 colorama==0.4.6
 dj-database-url==3.0.0
-Django==5.2.3
+Django==4.2.23
 djangorestframework==3.16.0
 gunicorn==23.0.0
 h11==0.16.0
 packaging==25.0
-psycopg2-binary==2.9.10
+psycopg2-binary==2.9.9
 python-decouple==3.8
 sqlparse==0.5.3
 typing_extensions==4.14.0
diff --git a/task_management/settings.py b/task_management/settings.py
index 0530f60..fa412ec 100644
--- a/task_management/settings.py
+++ b/task_management/settings.py
@@ -136,6 +136,7 @@
 REST_FRAMEWORK = {
     'DEFAULT_PERMISSION_CLASSES': [
         'rest_framework.permissions.IsAuthenticated',
+        # 'rest_framework.permissions.AllowAny',
     ],
     'DEFAULT_AUTHENTICATION_CLASSES': [
         'rest_framework.authentication.SessionAuthentication',
diff --git a/tasks/models.py b/tasks/models.py
index e42264c..a869b1a 100644
--- a/tasks/models.py
+++ b/tasks/models.py
@@ -20,7 +20,7 @@ class Status(models.TextChoices):
     due_date = models.DateTimeField(null=True, blank=True, verbose_name='Due Date')
     priority = models.CharField(max_length=10, choices=Priority.choices, default=Priority.LOW)
     status = models.CharField(max_length=20, choices=Status.choices, default=Status.PENDING)
-    user = models.ForeignKey(User, on_delete=models.CASCADE)
+    user = models.ForeignKey(User, on_delete=models.CASCADE, blank= True, null=True)
     
     def __str__(self):
         return f"{self.title} by: {self.user.username}"
diff --git a/tasks/serializers.py b/tasks/serializers.py
index 0334111..76930a7 100644
--- a/tasks/serializers.py
+++ b/tasks/serializers.py
@@ -6,7 +6,7 @@ class TaskSerializer(serializers.ModelSerializer):
     Serializer for Task Model
     Convierte entre instancias de Task y JSON
     """
-    is_overdue = serializers.ReadOnlyField()
+    is_overdue = serializers.SerializerMethodField()
 
     user = serializers.StringRelatedField(read_only=True)
 
@@ -24,6 +24,8 @@ class Meta:
             'is_overdue'
         ]
         read_only_fields = ['id', 'created_at', 'updated_at', 'user']
+    def get_is_overdue(self, obj):
+        return obj.due_date and obj.due_date < date.today()
 
 class TaskCreateUpdateSerializer(serializers.ModelSerializer):
     """
@@ -47,4 +49,4 @@ def validate_title(self, value):
         """Validación personalizada para título"""
         if not value or not value.strip():
             raise serializers.ValidationError("Title cannot be empty")
-        return value.strip()
\ No newline at end of file
+        return value.strip()
diff --git a/tasks/static/styles.css b/tasks/static/styles.css
index 07a508d..4b4340f 100644
--- a/tasks/static/styles.css
+++ b/tasks/static/styles.css
@@ -1211,4 +1211,14 @@ form input:focus, form textarea:focus, form select:focus {
     border-color: #667eea;
     background: white;
     box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
-}
\ No newline at end of file
+}
+
+.badge-danger {
+    background-color: red;
+    color: white;
+    padding: 4px 8px;
+    border-radius: 4px;
+    font-size: 0.75rem;
+    font-weight: bold;
+    margin-left: 5px;
+}
diff --git a/tasks/templates/tasks.html b/tasks/templates/tasks.html
index c40b7f6..32cd703 100644
--- a/tasks/templates/tasks.html
+++ b/tasks/templates/tasks.html
@@ -63,6 +63,10 @@ <h3>{{ task.title }}</h3>
                             <div class="task-meta">
                                 <span class="task-status status-{{ task.status }}">{{ task.get_status_display }}</span>
                                 <span class="task-date">{{ task.created_at|date:"M d, Y" }}</span>
+
+                                {% if task.is_overdue %}
+                                    <span class="badge-danger">Overdue</span>
+                                {% endif %}
                             </div>
                         </div>
                         <div class="task-card-footer">
@@ -146,4 +150,4 @@ <h3>Create New Task</h3>
             </form>
         </div>
     </dialog>
-{% endblock %}
\ No newline at end of file
+{% endblock %}
diff --git a/tasks/views.py b/tasks/views.py
index 18e1680..3382587 100644
--- a/tasks/views.py
+++ b/tasks/views.py
@@ -434,6 +434,7 @@ class TaskListAPIView(generics.ListCreateAPIView):
     API para listar tareas (GET) y crear nuevas tareas (POST)
     """
     permission_classes = [IsAuthenticated]
+    # permission_classes = [AllowAny]
     serializer_class = TaskSerializer
 
     def get_queryset(self):
@@ -449,6 +450,7 @@ def get_serializer_class(self):
     def perform_create(self, serializer):
         """Asignar usuario al crear tarea"""
         serializer.save(user=self.request.user)
+        # serializer.save(user=None)
 
 
 class TaskDetailAPIView(generics.RetrieveUpdateDestroyAPIView):
@@ -456,6 +458,7 @@ class TaskDetailAPIView(generics.RetrieveUpdateDestroyAPIView):
     API para obtener (GET), actualizar (PUT) o eliminar (DELETE) una tarea específica
     """
     permission_classes = [IsAuthenticated]
+    # permission_classes = [AllowAny]
     serializer_class = TaskSerializer
     lookup_field = 'id'