diff --git a/InvenTree/build/serializers.py b/InvenTree/build/serializers.py
index 547f565905..f2bf97cf7f 100644
--- a/InvenTree/build/serializers.py
+++ b/InvenTree/build/serializers.py
@@ -10,7 +10,8 @@ from django.core.exceptions import ValidationError as DjangoValidationError
 from django.utils.translation import ugettext_lazy as _
 
 from django.db.models import Case, When, Value
-from django.db.models import BooleanField
+from django.db.models import BooleanField, IntegerField
+from django.db.models.functions import Cast
 
 from rest_framework import serializers
 from rest_framework.serializers import ValidationError
@@ -71,6 +72,11 @@ class BuildSerializer(InvenTreeModelSerializer):
             )
         )
 
+        # Annotate with a "integer" version of the reference field, to be used for natural sorting
+        queryset = queryset.annotate(
+            integer_ref=Cast('reference', output_field=IntegerField())
+        )
+
         return queryset
 
     def __init__(self, *args, **kwargs):