---
title: Migrate from ASP.NET Core 3.1 to 5.0
author: scottaddie
description: Learn how to migrate an ASP.NET Core 3.1 project to ASP.NET Core 5.0.
ms.author: scaddie
ms.custom: mvc
ms.date: 03/23/2020
uid: migration/31-to-50
---
# Migrate from ASP.NET Core 3.1 to 5.0

By [Scott Addie](https://github.com/scottaddie)

This article explains how to update an existing ASP.NET Core 3.1 project to ASP.NET Core 5.0.

> [!IMPORTANT]
> ASP.NET Core 5.0 is currently in preview.

## Prerequisites

# [Visual Studio](#tab/visual-studio)

[!INCLUDE[](~/includes/net-core-prereqs-vs-5.0.md)]

# [Visual Studio Code](#tab/visual-studio-code)

[!INCLUDE[](~/includes/net-core-prereqs-vsc-5.0.md)]

# [Visual Studio for Mac](#tab/visual-studio-mac)

[!INCLUDE[](~/includes/net-core-prereqs-mac-5.0.md)]

---

## Update .NET Core SDK version in global.json

If you rely upon a [global.json](/dotnet/core/tools/global-json) file to target a specific .NET Core SDK version, update the `version` property to the .NET 5.0 SDK version that's installed. For example:

```diff
{
  "sdk": {
-    "version": "3.1.200"
+    "version": "5.0.100-preview.1.20155.7"
  }
}
```

## Update the target framework

In the project file, update the [Target Framework Moniker (TFM)](/dotnet/standard/frameworks) to `netcoreapp5.0`:

```diff
<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
-    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <TargetFramework>netcoreapp5.0</TargetFramework>
  </PropertyGroup>

</Project>
```

## Update package references

In the project file, update each `Microsoft.AspNetCore.*` and `Microsoft.Extensions.*` package reference's `Version` attribute to 5.0.0 or later. For example:

```diff
<ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="3.1.2" />
+    <PackageReference Include="Microsoft.Extensions.Caching.Abstractions" Version="3.1.2" />
-    <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="5.0.0-preview.1.20124.5" />
-    <PackageReference Include="Microsoft.Extensions.Caching.Abstractions" Version="5.0.0-preview.1.20120.4" />
</ItemGroup>
```

## Update Docker images

For apps using Docker, use a base image that includes ASP.NET Core 5.0. For example:

```bash
docker pull mcr.microsoft.com/dotnet/core/aspnet:5.0
```

<!-- uncomment after the breaking changes have been published -->
<!-- ## Review breaking changes

Review 3.1-to-5.0 breaking changes across .NET Core, ASP.NET Core, and Entity Framework Core at [Breaking changes for migration from version 3.1 to 5.0](/dotnet/core/compatibility/3.1-5.0). -->