diff --git a/csharp/BlockChain/packages.config b/csharp/BlockChain/packages.config
index 4c8c064..8861be4 100644
--- a/csharp/BlockChain/packages.config
+++ b/csharp/BlockChain/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Newtonsoft.Json" version="10.0.3" targetFramework="net451" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net451" />
   <package id="TinyWebServer.dll" version="1.0.1" targetFramework="net451" />
 </packages>
\ No newline at end of file