diff --git a/apps/mtm/serializers.py b/apps/mtm/serializers.py
index 2c68da9c..663b9a3c 100644
--- a/apps/mtm/serializers.py
+++ b/apps/mtm/serializers.py
@@ -22,7 +22,7 @@ class MaterialSimpleSerializer(CustomModelSerializer):
     class Meta:
         model = Material
         fields = ['id', 'name', 'number', 'model',
-                  'specification', 'type', 'cate', 'brothers', 'process_name', 'full_name']
+                  'specification', 'type', 'cate', 'brothers', 'process_name', 'full_name', "tracking"]
 
     def get_full_name(self, obj):
         return f'{obj.name}|{obj.specification if obj.specification else ""}|{obj.model if obj.model else ""}|{obj.process.name if obj.process else ""}'