diff --git a/developer-south-coast/2018-02-modernizing-dotnet-with-docker/src/SignUp.MessageHandlers.SaveProspect/packages.config b/developer-south-coast/2018-02-modernizing-dotnet-with-docker/src/SignUp.MessageHandlers.SaveProspect/packages.config
index aaa2106..20198aa 100644
--- a/developer-south-coast/2018-02-modernizing-dotnet-with-docker/src/SignUp.MessageHandlers.SaveProspect/packages.config
+++ b/developer-south-coast/2018-02-modernizing-dotnet-with-docker/src/SignUp.MessageHandlers.SaveProspect/packages.config
@@ -2,7 +2,7 @@
 <packages>
   <package id="EntityFramework" version="6.1.3" targetFramework="net452" />
   <package id="NATS.Client" version="0.8.0" targetFramework="net452" />
-  <package id="Newtonsoft.Json" version="10.0.2" targetFramework="net452" />
+  <package id="Newtonsoft.Json" version="13.0.2" targetFramework="net452" />
   <package id="prometheus-net" version="1.3.5" targetFramework="net452" />
   <package id="protobuf-net" version="2.0.0.668" targetFramework="net452" />
   <package id="System.Reactive" version="3.1.1" targetFramework="net452" />