diff --git a/src/JustGiving.EventStore.Http.SubscriberHost.Tests/packages.config b/src/JustGiving.EventStore.Http.SubscriberHost.Tests/packages.config
index dffc64e..49dd4db 100644
--- a/src/JustGiving.EventStore.Http.SubscriberHost.Tests/packages.config
+++ b/src/JustGiving.EventStore.Http.SubscriberHost.Tests/packages.config
@@ -3,6 +3,6 @@
   <package id="FluentAssertions" version="3.3.0" targetFramework="net45" />
   <package id="log4net" version="2.0.3" targetFramework="net451" />
   <package id="Moq" version="4.2.1502.0911" targetFramework="net45" />
-  <package id="Newtonsoft.Json" version="9.0.1" targetFramework="net45" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net45" />
   <package id="NUnit" version="2.6.4" targetFramework="net45" />
 </packages>
\ No newline at end of file