diff --git a/Source/EventFlow.AspNetCore/Configuration/EventFlowJsonOptionsMvcConfiguration.cs b/Source/EventFlow.AspNetCore/Configuration/EventFlowJsonOptionsMvcConfiguration.cs
index 208d30579..b14b73a85 100644
--- a/Source/EventFlow.AspNetCore/Configuration/EventFlowJsonOptionsMvcConfiguration.cs
+++ b/Source/EventFlow.AspNetCore/Configuration/EventFlowJsonOptionsMvcConfiguration.cs
@@ -27,7 +27,13 @@
 
 namespace EventFlow.AspNetCore.Configuration
 {
-    public class EventFlowJsonOptionsMvcConfiguration : IConfigureOptions<MvcJsonOptions>
+    public class EventFlowJsonOptionsMvcConfiguration : 
+#if NETSTANDARD2_0
+        IConfigureOptions<MvcJsonOptions>
+#endif
+#if NETCOREAPP3_0
+        IConfigureOptions<MvcNewtonsoftJsonOptions>
+#endif
     {
         private readonly IJsonOptions _jsonOptions;
 
@@ -36,9 +42,17 @@ public EventFlowJsonOptionsMvcConfiguration(IJsonOptions jsonOptions)
             _jsonOptions = jsonOptions;
         }
 
+#if NETSTANDARD2_0
         public void Configure(MvcJsonOptions options)
         {
             _jsonOptions.Apply(options.SerializerSettings);
         }
+#endif
+#if NETCOREAPP3_0
+        public void Configure(MvcNewtonsoftJsonOptions options)
+        {
+            _jsonOptions.Apply(options.SerializerSettings);
+        }
+#endif
     }
 }
diff --git a/Source/EventFlow.AspNetCore/EventFlow.AspNetCore.csproj b/Source/EventFlow.AspNetCore/EventFlow.AspNetCore.csproj
index 48e6891f4..0e66aed88 100644
--- a/Source/EventFlow.AspNetCore/EventFlow.AspNetCore.csproj
+++ b/Source/EventFlow.AspNetCore/EventFlow.AspNetCore.csproj
@@ -1,7 +1,7 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <Import Project="../Common.props" />
   <PropertyGroup>
-    <TargetFramework>netstandard2.0</TargetFramework>
+    <TargetFrameworks>netstandard2.0;netcoreapp3.0</TargetFrameworks>
     <TreatWarningsAsErrors>True</TreatWarningsAsErrors>
     <GenerateAssemblyInfo>True</GenerateAssemblyInfo>
     <GeneratePackageOnBuild>False</GeneratePackageOnBuild>
@@ -21,9 +21,18 @@
     <PackageReleaseNotes>UPDATED BY BUILD</PackageReleaseNotes>
   </PropertyGroup>
 
-  <ItemGroup>
+  <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
     <PackageReference Include="Microsoft.AspNetCore.Http" Version="2.0.0" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc.Formatters.Json" Version="2.0.0" />
+  </ItemGroup>
+
+  <ItemGroup Condition="'$(TargetFramework)' == 'netcoreapp3.0'">
+    <FrameworkReference Include="Microsoft.AspNetCore.App" />
+    <PackageReference Include="Microsoft.Extensions.Options" Version="3.0.0" />
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="3.0.0" />
+  </ItemGroup>
+
+  <ItemGroup>
     <PackageReference Include="Microsoft.Extensions.Hosting.Abstractions" Version="2.1.0" />
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0-beta2-19270-01" PrivateAssets="All" />
   </ItemGroup>
diff --git a/Source/EventFlow.AspNetCore/Extensions/AspNetCoreEventFlowOptions.cs b/Source/EventFlow.AspNetCore/Extensions/AspNetCoreEventFlowOptions.cs
index f8a05992a..751e440d9 100644
--- a/Source/EventFlow.AspNetCore/Extensions/AspNetCoreEventFlowOptions.cs
+++ b/Source/EventFlow.AspNetCore/Extensions/AspNetCoreEventFlowOptions.cs
@@ -93,12 +93,22 @@ public AspNetCoreEventFlowOptions AddDefaultMetadataProviders()
             return this;
         }
 
+#if NETSTANDARD2_0
         public AspNetCoreEventFlowOptions UseMvcJsonOptions()
         {
             _options.RegisterServices(s =>
                 s.Register<IConfigureOptions<MvcJsonOptions>, EventFlowJsonOptionsMvcConfiguration>());
             return this;
         }
+#endif
+#if NETCOREAPP3_0
+        public AspNetCoreEventFlowOptions UseMvcJsonOptions()
+        {
+            _options.RegisterServices(s =>
+                s.Register<IConfigureOptions<MvcNewtonsoftJsonOptions>, EventFlowJsonOptionsMvcConfiguration>());
+            return this;
+        }
+#endif
 
         public AspNetCoreEventFlowOptions UseModelBinding(
             Action<EventFlowModelBindingMvcConfiguration> configureModelBinding = null)
diff --git a/Source/EventFlow/EventFlow.csproj b/Source/EventFlow/EventFlow.csproj
index 4611babe8..aec72b24a 100644
--- a/Source/EventFlow/EventFlow.csproj
+++ b/Source/EventFlow/EventFlow.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <Import Project="../Common.props" />
   <PropertyGroup>
-    <TargetFrameworks>net452;netstandard1.6;netstandard2.0</TargetFrameworks>
+    <TargetFrameworks>net452;netstandard1.6;netstandard2.0;netcoreapp3.0</TargetFrameworks>
     <TreatWarningsAsErrors>True</TreatWarningsAsErrors>
     <GenerateAssemblyInfo>True</GenerateAssemblyInfo>
     <GeneratePackageOnBuild>False</GeneratePackageOnBuild>
diff --git a/appveyor.yml b/appveyor.yml
index 4e556ea8c..5c4fc2963 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -20,7 +20,7 @@ environment:
   EVENTFLOW_MSSQL_SERVER: (local)\SQL2017
   EVENTFLOW_MSSQL_USER: sa
   EVENTFLOW_MSSQL_PASS: Password12!
-  
+
 test: off
 
 artifacts:
diff --git a/up_integration-test-env.ps1 b/up_integration-test-env.ps1
index 49848afcf..ca51562d5 100644
--- a/up_integration-test-env.ps1
+++ b/up_integration-test-env.ps1
@@ -14,7 +14,7 @@ $env:ELASTICSEARCH_URL = "http://localhost:9200"
 # Event Store
 $env:EVENTSTORE_URL = "tcp://admin:changeit@localhost:1113"
 
-# Helth check
+# Health checks
 # Event Store
 curl --connect-timeout 60 --retry 5 -sL "http://localhost:2113"
 # Elasticsearch