diff --git a/apps/inm/serializers.py b/apps/inm/serializers.py
index 303e2934..3521d692 100644
--- a/apps/inm/serializers.py
+++ b/apps/inm/serializers.py
@@ -126,7 +126,7 @@ class MIOItemCreateSerializer(CustomModelSerializer):
     class Meta:
         model = MIOItem
         fields = ['mio', 'warehouse', 'material',
-                  'batch', 'count', 'assemb', 'is_testok', 'mioitemw', 'mb', 'wm', 'unit_price', 'note']
+                  'batch', 'count', 'assemb', 'is_testok', 'mioitemw', 'mb', 'wm', 'unit_price', 'note', "pack_index"]
         extra_kwargs = {
             'mio': {'required': True}, 'warehouse': {'required': False},
             'material': {'required': False}, 'batch': {'required': False}}