diff --git a/api/v1/serializers/course.py b/api/v1/serializers/course.py
index 8d14e42b..c82251bf 100644
--- a/api/v1/serializers/course.py
+++ b/api/v1/serializers/course.py
@@ -106,6 +106,7 @@ class CourseCreateSerializer(DispatchContentMixin,
             'materials',
             'created_at',
             'update_at',
+            'deactivated_at',
             'content',
             'gallery',
         )
@@ -115,6 +116,7 @@ class CourseCreateSerializer(DispatchContentMixin,
             'url',
             'created_at',
             'update_at',
+            'deactivated_at',
         )
 
     def create(self, validated_data):
@@ -163,12 +165,14 @@ class LessonCreateSerializer(serializers.ModelSerializer):
             'content',
             'created_at',
             'update_at',
+            'deactivated_at',
         )
 
         read_only_fields = (
             'id',
             'created_at',
             'update_at',
+            'deactivated_at',
         )
 
     def dispatch_content(self, lesson, content):