diff --git a/examples/CSharp/apitest.csproj b/examples/CSharp/apitest.csproj
index 7570b43..56e5643 100644
--- a/examples/CSharp/apitest.csproj
+++ b/examples/CSharp/apitest.csproj
@@ -6,7 +6,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="11.0.1" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
   </ItemGroup>
 
 </Project>