diff --git a/src/code-listings/lesson-43/Core/packages.config b/src/code-listings/lesson-43/Core/packages.config
index 1ea8e92..dd443a8 100644
--- a/src/code-listings/lesson-43/Core/packages.config
+++ b/src/code-listings/lesson-43/Core/packages.config
@@ -2,5 +2,5 @@
 <packages>
   <package id="FSharp.Core" version="4.0.0.1" targetFramework="net45" />
   <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