diff --git a/Web/WebMVC/mtbVisualizer/mtbVisualizer.csproj b/Web/WebMVC/mtbVisualizer/mtbVisualizer.csproj
index 9ff92f6..249927c 100644
--- a/Web/WebMVC/mtbVisualizer/mtbVisualizer.csproj
+++ b/Web/WebMVC/mtbVisualizer/mtbVisualizer.csproj
@@ -31,7 +31,7 @@
     </PackageReference>
     <PackageReference Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" Version="1.9.5" />
     <PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="2.2.4" />
-    <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/Web/WebMVC/mtbVisualizerTest/mtbVisualizerTest.csproj b/Web/WebMVC/mtbVisualizerTest/mtbVisualizerTest.csproj
index 07c3b11..f4372cf 100644
--- a/Web/WebMVC/mtbVisualizerTest/mtbVisualizerTest.csproj
+++ b/Web/WebMVC/mtbVisualizerTest/mtbVisualizerTest.csproj
@@ -12,7 +12,7 @@
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.9.0" />
     <PackageReference Include="MSTest.TestAdapter" Version="2.0.0" />
     <PackageReference Include="MSTest.TestFramework" Version="2.0.0" />
-    <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
     <PackageReference Include="NSubstitute" Version="4.2.1" />
     <PackageReference Include="NSubstitute.Analyzers.CSharp" Version="1.0.10" />
   </ItemGroup>