diff --git a/src/2020-02-16_ASMX_WCF_WebApi/02_WCF/WcfWebService/WcfRestWebService/packages.config b/src/2020-02-16_ASMX_WCF_WebApi/02_WCF/WcfWebService/WcfRestWebService/packages.config
index 464b60a..9a438df 100644
--- a/src/2020-02-16_ASMX_WCF_WebApi/02_WCF/WcfWebService/WcfRestWebService/packages.config
+++ b/src/2020-02-16_ASMX_WCF_WebApi/02_WCF/WcfWebService/WcfRestWebService/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Microsoft.CodeDom.Providers.DotNetCompilerPlatform" version="2.0.0" targetFramework="net472" />
-  <package id="Newtonsoft.Json" version="12.0.3" targetFramework="net472" />
+  <package id="Newtonsoft.Json" version="13.0.2" targetFramework="net472" />
 </packages>
\ No newline at end of file