diff --git a/EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Services/EnvelopeService.cs b/EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Services/EnvelopeService.cs
index 1acfa669..fcfb26bd 100644
--- a/EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Services/EnvelopeService.cs
+++ b/EnvelopeGenerator.Server/EnvelopeGenerator.Server.Client/Services/EnvelopeService.cs
@@ -1,5 +1,6 @@
 using System.Net.Http.Json;
 using System.Text.Json;
+using EnvelopeGenerator.Application.Common.Dto;
 using EnvelopeGenerator.Server.Client.Models;
 using EnvelopeGenerator.Server.Client.Options;
 using Microsoft.AspNetCore.WebUtilities;