diff --git a/src/NSwag.Core/NSwag.Core.csproj b/src/NSwag.Core/NSwag.Core.csproj
index 0b7622ad92..aec6897699 100644
--- a/src/NSwag.Core/NSwag.Core.csproj
+++ b/src/NSwag.Core/NSwag.Core.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFrameworks>netstandard1.0;net45</TargetFrameworks>
     <Description>NSwag: The Swagger API toolchain for .NET and TypeScript</Description>
@@ -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="'$(TargetFramework)' == 'net45'">
diff --git a/src/NSwag.SwaggerGeneration.WebApi/NSwag.SwaggerGeneration.WebApi.csproj b/src/NSwag.SwaggerGeneration.WebApi/NSwag.SwaggerGeneration.WebApi.csproj
index e7cfd630fc..4ddd0f242a 100644
--- a/src/NSwag.SwaggerGeneration.WebApi/NSwag.SwaggerGeneration.WebApi.csproj
+++ b/src/NSwag.SwaggerGeneration.WebApi/NSwag.SwaggerGeneration.WebApi.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFrameworks>netstandard1.0;net45</TargetFrameworks>
     <Description>NSwag: The Swagger API toolchain for .NET and TypeScript</Description>
@@ -21,7 +21,7 @@
     <DefineConstants>TRACE;DEBUG</DefineConstants>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="9.0.1" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="NJsonSchema" Version="9.6.3" />
   </ItemGroup>
   <ItemGroup Condition="'$(TargetFramework)' == 'net45'">
diff --git a/src/NSwag.SwaggerGeneration/NSwag.SwaggerGeneration.csproj b/src/NSwag.SwaggerGeneration/NSwag.SwaggerGeneration.csproj
index f08718ab4b..7c0ea67128 100644
--- a/src/NSwag.SwaggerGeneration/NSwag.SwaggerGeneration.csproj
+++ b/src/NSwag.SwaggerGeneration/NSwag.SwaggerGeneration.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFrameworks>netstandard1.0;net45</TargetFrameworks>
     <Description>NSwag: The Swagger API toolchain for .NET and TypeScript</Description>
@@ -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'">