diff --git a/src/NSwag.Annotations/NSwag.Annotations.csproj b/src/NSwag.Annotations/NSwag.Annotations.csproj
index 9e41d33112..25c9941255 100644
--- a/src/NSwag.Annotations/NSwag.Annotations.csproj
+++ b/src/NSwag.Annotations/NSwag.Annotations.csproj
@@ -21,7 +21,7 @@
     <DefineConstants>TRACE;DEBUG</DefineConstants>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="9.0.1" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
   </ItemGroup>
   <ItemGroup Condition="'$(TargetFramework)' == 'net45'">
     <Reference Include="Microsoft.CSharp" />
diff --git a/src/NSwag.AssemblyLoader/NSwag.AssemblyLoader.csproj b/src/NSwag.AssemblyLoader/NSwag.AssemblyLoader.csproj
index 120ed53ecc..af4a12bb59 100644
--- a/src/NSwag.AssemblyLoader/NSwag.AssemblyLoader.csproj
+++ b/src/NSwag.AssemblyLoader/NSwag.AssemblyLoader.csproj
@@ -26,7 +26,7 @@
   <ItemGroup>
     <PackageReference Include="NJsonSchema" Version="9.6.3" />
     <PackageReference Include="NConsole" Version="3.6.6378.42120" />
-    <PackageReference Include="Newtonsoft.Json" Version="9.0.1" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="..\NSwag.AssemblyLoaderCore\Commands\AssemblyTypeToSwaggerCommand.cs" Link="Commands\AssemblyTypeToSwaggerCommand.cs" />
diff --git a/src/NSwag.CodeGeneration.Tests/packages.config b/src/NSwag.CodeGeneration.Tests/packages.config
index 68382d9b0b..2d6544f3b1 100644
--- a/src/NSwag.CodeGeneration.Tests/packages.config
+++ b/src/NSwag.CodeGeneration.Tests/packages.config
@@ -10,7 +10,7 @@
   <package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net45" />
   <package id="Microsoft.Win32.Primitives" version="4.3.0" targetFramework="net46" />
   <package id="NETStandard.Library" version="1.6.1" targetFramework="net46" />
-  <package id="Newtonsoft.Json" version="9.0.1" targetFramework="net45" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net45" />
   <package id="NJsonSchema" version="9.6.3" targetFramework="net462" />
   <package id="NJsonSchema.CodeGeneration" version="9.6.3" targetFramework="net462" />
   <package id="NJsonSchema.CodeGeneration.CSharp" version="9.6.3" targetFramework="net462" />
diff --git a/src/NSwag.CodeGeneration/NSwag.CodeGeneration.csproj b/src/NSwag.CodeGeneration/NSwag.CodeGeneration.csproj
index 938dc15681..6f648579fd 100644
--- a/src/NSwag.CodeGeneration/NSwag.CodeGeneration.csproj
+++ b/src/NSwag.CodeGeneration/NSwag.CodeGeneration.csproj
@@ -18,7 +18,7 @@
     <DocumentationFile>bin\$(Configuration)\$(TargetFramework)\$(AssemblyName).xml</DocumentationFile>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="9.0.1" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="NJsonSchema" Version="9.6.3" />
     <PackageReference Include="NJsonSchema.CodeGeneration" Version="9.6.3" />
   </ItemGroup>
diff --git a/src/NSwag.Commands/NSwag.Commands.csproj b/src/NSwag.Commands/NSwag.Commands.csproj
index 5d4af44c37..cfec7b725c 100644
--- a/src/NSwag.Commands/NSwag.Commands.csproj
+++ b/src/NSwag.Commands/NSwag.Commands.csproj
@@ -18,7 +18,7 @@
     <DocumentationFile>bin\$(Configuration)\$(TargetFramework)\$(AssemblyName).xml</DocumentationFile>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="9.0.1" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="NConsole" Version="3.6.6378.42120" />
     <PackageReference Include="NJsonSchema" Version="9.6.3" />
     <PackageReference Include="NJsonSchema.CodeGeneration" Version="9.6.3" />
diff --git a/src/NSwag.Core/NSwag.Core.csproj b/src/NSwag.Core/NSwag.Core.csproj
index 0b7622ad92..cb1598b5c8 100644
--- a/src/NSwag.Core/NSwag.Core.csproj
+++ b/src/NSwag.Core/NSwag.Core.csproj
@@ -22,7 +22,7 @@
     <DefineConstants>TRACE;DEBUG</DefineConstants>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="9.0.1" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="NJsonSchema" Version="9.6.3" />
   </ItemGroup>
   <ItemGroup Condition="'$(TargetFramework)' == 'net45'">
diff --git a/src/NSwag.SwaggerGeneration.WebApi/NSwag.SwaggerGeneration.WebApi.csproj b/src/NSwag.SwaggerGeneration.WebApi/NSwag.SwaggerGeneration.WebApi.csproj
index e7cfd630fc..860ed4c929 100644
--- a/src/NSwag.SwaggerGeneration.WebApi/NSwag.SwaggerGeneration.WebApi.csproj
+++ b/src/NSwag.SwaggerGeneration.WebApi/NSwag.SwaggerGeneration.WebApi.csproj
@@ -21,7 +21,7 @@
     <DefineConstants>TRACE;DEBUG</DefineConstants>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="9.0.1" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="NJsonSchema" Version="9.6.3" />
   </ItemGroup>
   <ItemGroup Condition="'$(TargetFramework)' == 'net45'">
diff --git a/src/NSwag.SwaggerGeneration/NSwag.SwaggerGeneration.csproj b/src/NSwag.SwaggerGeneration/NSwag.SwaggerGeneration.csproj
index f08718ab4b..1a5908295f 100644
--- a/src/NSwag.SwaggerGeneration/NSwag.SwaggerGeneration.csproj
+++ b/src/NSwag.SwaggerGeneration/NSwag.SwaggerGeneration.csproj
@@ -21,7 +21,7 @@
     <DefineConstants>TRACE;DEBUG</DefineConstants>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="9.0.1" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="NJsonSchema" Version="9.6.3" />
   </ItemGroup>
   <ItemGroup Condition="'$(TargetFramework)' == 'net45'">