diff --git a/src/SOD/Example/WinFormMvvm/FileSyncGui/packages.config b/src/SOD/Example/WinFormMvvm/FileSyncGui/packages.config
index ff228fe7..d46eea92 100644
--- a/src/SOD/Example/WinFormMvvm/FileSyncGui/packages.config
+++ b/src/SOD/Example/WinFormMvvm/FileSyncGui/packages.config
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Newtonsoft.Json" version="12.0.1" targetFramework="net451" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net451" />
   <package id="PDF.Net.MSF.Client" version="1.2.2" targetFramework="net451" />
   <package id="PDF.NET.SOD" version="5.6.2.1231" targetFramework="net451" />
   <package id="PDF.NET.SOD.Core" version="5.6.2.1231" targetFramework="net451" />