diff --git a/Chapter-16/NumberConverterApp/TestClient/packages.config b/Chapter-16/NumberConverterApp/TestClient/packages.config
index a8bb44d..1c51929 100644
--- a/Chapter-16/NumberConverterApp/TestClient/packages.config
+++ b/Chapter-16/NumberConverterApp/TestClient/packages.config
@@ -6,7 +6,7 @@
   <package id="Microsoft.Data.Edm" version="5.8.2" targetFramework="net462" />
   <package id="Microsoft.Data.OData" version="5.8.2" targetFramework="net462" />
   <package id="Microsoft.Data.Services.Client" version="5.8.2" targetFramework="net462" />
-  <package id="Newtonsoft.Json" version="10.0.2" targetFramework="net462" />
+  <package id="Newtonsoft.Json" version="13.0.2" targetFramework="net462" />
   <package id="System.ComponentModel.EventBasedAsync" version="4.0.11" targetFramework="net462" />
   <package id="System.Diagnostics.DiagnosticSource" version="4.4.0" targetFramework="net462" />
   <package id="System.Dynamic.Runtime" version="4.0.0" targetFramework="net462" />