diff --git a/src/ParallelPatterns/src/Module1/ParallelPatterns/ParallelPatterns.csproj b/src/ParallelPatterns/src/Module1/ParallelPatterns/ParallelPatterns.csproj
index 31cee80..6760e86 100644
--- a/src/ParallelPatterns/src/Module1/ParallelPatterns/ParallelPatterns.csproj
+++ b/src/ParallelPatterns/src/Module1/ParallelPatterns/ParallelPatterns.csproj
@@ -5,7 +5,7 @@
     <TargetFrameworks>netcoreapp2.1</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
   </ItemGroup>
 
   <ItemGroup>