diff --git a/Chapter15/StreetFoo.Client/StreetFoo.Client.UI/packages.config b/Chapter15/StreetFoo.Client/StreetFoo.Client.UI/packages.config
index 875d024..992ebb0 100644
--- a/Chapter15/StreetFoo.Client/StreetFoo.Client.UI/packages.config
+++ b/Chapter15/StreetFoo.Client/StreetFoo.Client.UI/packages.config
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Newtonsoft.Json" version="4.5.9" targetFramework="winrt45" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="winrt45" />
 </packages>
\ No newline at end of file