diff --git a/NewExercises/Exercise-13-complete/Marketing/Marketing.csproj b/NewExercises/Exercise-13-complete/Marketing/Marketing.csproj
index 1236f9b..ad6bf5a 100644
--- a/NewExercises/Exercise-13-complete/Marketing/Marketing.csproj
+++ b/NewExercises/Exercise-13-complete/Marketing/Marketing.csproj
@@ -8,7 +8,7 @@
   <ItemGroup>
     <PackageReference Include="NServiceBus" Version="7.*" />
     <PackageReference Include="Serilog.Sinks.Console" Version="3.0.1" />
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
   </ItemGroup>
 
   <ItemGroup>