diff --git a/Simulatica/CalcEngine/CalcEngine.csproj b/Simulatica/CalcEngine/CalcEngine.csproj
index 9d6284d..76d3c12 100644
--- a/Simulatica/CalcEngine/CalcEngine.csproj
+++ b/Simulatica/CalcEngine/CalcEngine.csproj
@@ -10,7 +10,7 @@
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="3.7.0" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="3.1.7" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="3.1.7" />
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="System.CodeDom" Version="4.7.0" />
     <PackageReference Include="System.Reflection.Emit" Version="4.3.0" />
   </ItemGroup>