diff --git a/Jtc.Optimization.LeanOptimizer.Base/Jtc.Optimization.LeanOptimizer.Base.csproj b/Jtc.Optimization.LeanOptimizer.Base/Jtc.Optimization.LeanOptimizer.Base.csproj
index cef5e8b..07852df 100644
--- a/Jtc.Optimization.LeanOptimizer.Base/Jtc.Optimization.LeanOptimizer.Base.csproj
+++ b/Jtc.Optimization.LeanOptimizer.Base/Jtc.Optimization.LeanOptimizer.Base.csproj
@@ -6,7 +6,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
     <PackageReference Include="System.Runtime.Loader" Version="4.3.0" />
   </ItemGroup>
 
diff --git a/Jtc.Optimization.LeanOptimizer.Legacy/packages.config b/Jtc.Optimization.LeanOptimizer.Legacy/packages.config
index 55f920a..dd5873a 100644
--- a/Jtc.Optimization.LeanOptimizer.Legacy/packages.config
+++ b/Jtc.Optimization.LeanOptimizer.Legacy/packages.config
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Microsoft.Bcl.AsyncInterfaces" version="1.1.0" targetFramework="net472" />
-  <package id="Newtonsoft.Json" version="12.0.2" targetFramework="net472" />
+  <package id="Newtonsoft.Json" version="13.0.2" targetFramework="net472" />
   <package id="System.Buffers" version="4.5.1" targetFramework="net472" />
   <package id="System.Memory" version="4.5.4" targetFramework="net472" />
   <package id="System.Numerics.Vectors" version="4.5.0" targetFramework="net472" />