diff --git a/Book/Samples/Chapter 8/GreatWall8/GreatWall/packages.config b/Book/Samples/Chapter 8/GreatWall8/GreatWall/packages.config
index 2d34927..e2f9ac9 100644
--- a/Book/Samples/Chapter 8/GreatWall8/GreatWall/packages.config	
+++ b/Book/Samples/Chapter 8/GreatWall8/GreatWall/packages.config	
@@ -16,7 +16,7 @@
   <package id="Microsoft.IdentityModel.Tokens" version="5.1.4" targetFramework="net46" />
   <package id="Microsoft.Rest.ClientRuntime" version="2.3.2" targetFramework="net46" />
   <package id="Microsoft.WindowsAzure.ConfigurationManager" version="3.1.0" targetFramework="net46" />
-  <package id="Newtonsoft.Json" version="9.0.1" targetFramework="net46" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net46" />
   <package id="QnAMakerDialog" version="3.1.2" targetFramework="net46" />
   <package id="System.IdentityModel.Tokens.Jwt" version="5.1.4" targetFramework="net46" />
 </packages>
\ No newline at end of file