diff --git a/NearCardAttendance.TcpServer/NearCardAttendance.TcpServer.csproj b/NearCardAttendance.TcpServer/NearCardAttendance.TcpServer.csproj
index eddfb76..9c82ad7 100644
--- a/NearCardAttendance.TcpServer/NearCardAttendance.TcpServer.csproj
+++ b/NearCardAttendance.TcpServer/NearCardAttendance.TcpServer.csproj
@@ -30,6 +30,7 @@
     <PackageReference Include="DotNetty.Handlers" Version="0.7.5" />
     <PackageReference Include="DotNetty.Transport" Version="0.7.5" />
     <PackageReference Include="Microsoft.Extensions.Hosting" Version="7.0.0" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="Serilog.AspNetCore" Version="3.4.0" />
     <PackageReference Include="Serilog.Expressions" Version="3.4.0" />
     <PackageReference Include="Serilog.Sinks.Async" Version="1.5.0" />