diff --git a/src/code-listings/lesson-35/Core/packages.config b/src/code-listings/lesson-35/Core/packages.config
index ee1c8c5..50e3174 100644
--- a/src/code-listings/lesson-35/Core/packages.config
+++ b/src/code-listings/lesson-35/Core/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="FSharp.Data.SqlClient" version="1.8.2" targetFramework="net45" />
-  <package id="Newtonsoft.Json" version="9.0.1" targetFramework="net45" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net45" />
 </packages>
\ No newline at end of file