diff --git a/ch05/src/NerdDinner.Messaging/NerdDinner.Messaging.csproj b/ch05/src/NerdDinner.Messaging/NerdDinner.Messaging.csproj
index 9d3e7e7..b0cfe02 100644
--- a/ch05/src/NerdDinner.Messaging/NerdDinner.Messaging.csproj
+++ b/ch05/src/NerdDinner.Messaging/NerdDinner.Messaging.csproj
@@ -12,7 +12,7 @@
     <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="2.1.1" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="2.1.1" />
     <PackageReference Include="NATS.Client" Version="0.8.1" />
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.1" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
   </ItemGroup>
 
   <ItemGroup Condition=" '$(TargetFramework)' == 'net452' ">
diff --git a/ch05/src/NerdDinner/packages.config b/ch05/src/NerdDinner/packages.config
index c4ca975..f4d6400 100644
--- a/ch05/src/NerdDinner/packages.config
+++ b/ch05/src/NerdDinner/packages.config
@@ -45,7 +45,7 @@
   <package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net472" />
   <package id="Modernizr" version="2.6.2" targetFramework="net472" />
   <package id="NATS.Client" version="0.8.1" targetFramework="net472" />
-  <package id="Newtonsoft.Json" version="12.0.1" targetFramework="net472" />
+  <package id="Newtonsoft.Json" version="13.0.2" targetFramework="net472" />
   <package id="PagedList" version="1.15.0.0" targetFramework="net472" />
   <package id="RestSharp" version="106.6.7" targetFramework="net472" />
   <package id="System.Buffers" version="4.4.0" targetFramework="net472" />