diff --git a/IRaCIS.Core.Application/Service/ImageAndDoc/DTO/DicomSeriesModel.cs b/IRaCIS.Core.Application/Service/ImageAndDoc/DTO/DicomSeriesModel.cs
index d67f4501d..ac26eb872 100644
--- a/IRaCIS.Core.Application/Service/ImageAndDoc/DTO/DicomSeriesModel.cs
+++ b/IRaCIS.Core.Application/Service/ImageAndDoc/DTO/DicomSeriesModel.cs
@@ -1,4 +1,5 @@
-using System.Text.Json.Serialization;
+
+using Newtonsoft.Json;
 
 namespace IRaCIS.Core.Application.Contracts.Dicom.DTO
 {