diff --git a/src/DurableTask.AzureServiceFabric/DurableTask.AzureServiceFabric.csproj b/src/DurableTask.AzureServiceFabric/DurableTask.AzureServiceFabric.csproj
index 900102a4f..aa9e12bcc 100644
--- a/src/DurableTask.AzureServiceFabric/DurableTask.AzureServiceFabric.csproj
+++ b/src/DurableTask.AzureServiceFabric/DurableTask.AzureServiceFabric.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),DurableTask.sln))\tools\DurableTask.props" />
   <PropertyGroup>
@@ -17,13 +17,13 @@
 
   <ItemGroup Condition="'$(TargetFramework)' == 'net462'">
     <PackageReference Include="ImpromptuInterface" Version="6.2.2" />
-    <PackageReference Include="Newtonsoft.Json" Version="7.0.1" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <Reference Include="System.Web" />
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFramework)' == 'net472'">
     <PackageReference Include="ImpromptuInterface" Version="6.2.2" />
-    <PackageReference Include="Newtonsoft.Json" Version="7.0.1" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <Reference Include="System.Web" />
   </ItemGroup>
 
@@ -31,7 +31,7 @@
     <!-- Restoring packages for netstandard2.0 causes warnings. As warnings are treated as errors, compilation will fail. -->
     <!-- Once the packages support netstandard2.0, this project will support netstandard2.0. -->
     <PackageReference Include="ImpromptuInterface" Version="7.0.1" />
-    <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/src/DurableTask.Core/DurableTask.Core.csproj b/src/DurableTask.Core/DurableTask.Core.csproj
index 8c1983c72..b57e76ad3 100644
--- a/src/DurableTask.Core/DurableTask.Core.csproj
+++ b/src/DurableTask.Core/DurableTask.Core.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),DurableTask.sln))\tools\DurableTask.props" />
   <PropertyGroup>
@@ -32,7 +32,7 @@
   
   <ItemGroup Condition="'$(TargetFramework)' == 'net462'">
     <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="1.1.1" />
-    <PackageReference Include="Newtonsoft.Json" Version="7.0.1" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">