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.Tests/packages.config b/Jtc.Optimization.LeanOptimizer.Tests/packages.config
index 4663093..fbe0a0b 100644
--- a/Jtc.Optimization.LeanOptimizer.Tests/packages.config
+++ b/Jtc.Optimization.LeanOptimizer.Tests/packages.config
@@ -8,7 +8,7 @@
   <package id="MathNet.Numerics" version="4.8.1" targetFramework="net472" />
   <package id="Microsoft.CSharp" version="4.7.0" targetFramework="net472" />
   <package id="Moq" version="4.13.1" targetFramework="net47" />
-  <package id="Newtonsoft.Json" version="12.0.2" targetFramework="net47" />
+  <package id="Newtonsoft.Json" version="13.0.2" targetFramework="net47" />
   <package id="NLog" version="4.6.5" targetFramework="net47" />
   <package id="NUnit" version="3.12.0" targetFramework="net47" />
   <package id="SharpLearning.Common.Interfaces" version="0.31.8" targetFramework="net472" />
diff --git a/Jtc.Optimization.LeanOptimizer/Jtc.Optimization.LeanOptimizer.csproj b/Jtc.Optimization.LeanOptimizer/Jtc.Optimization.LeanOptimizer.csproj
index b86bdc3..e63b074 100644
--- a/Jtc.Optimization.LeanOptimizer/Jtc.Optimization.LeanOptimizer.csproj
+++ b/Jtc.Optimization.LeanOptimizer/Jtc.Optimization.LeanOptimizer.csproj
@@ -22,7 +22,7 @@
     <PackageReference Include="MathNet.Numerics" Version="4.15.0" />
     <PackageReference Include="McMaster.Extensions.CommandLineUtils" Version="2.6.0" />
     <PackageReference Include="Microsoft.IO.RecyclableMemoryStream" Version="2.1.3" />
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
     <PackageReference Include="NLog" Version="4.7.13" />
     <PackageReference Include="NodaTime" Version="3.0.5" />
     <PackageReference Include="protobuf-net.Core" Version="3.0.0" />