diff --git a/Demos.Android/Resources/Resource.Designer.cs b/Demos.Android/Resources/Resource.Designer.cs
index a040fa0..7d74379 100644
--- a/Demos.Android/Resources/Resource.Designer.cs
+++ b/Demos.Android/Resources/Resource.Designer.cs
@@ -2,7 +2,6 @@
 //------------------------------------------------------------------------------
 // <auto-generated>
 //     This code was generated by a tool.
-//     Runtime Version:4.0.30319.42000
 //
 //     Changes to this file may cause incorrect behavior and will be lost if
 //     the code is regenerated.
@@ -15,7 +14,7 @@ namespace Demos.Android
 {
 	
 	
-	[System.CodeDom.Compiler.GeneratedCodeAttribute("Xamarin.Android.Build.Tasks", "1.0.0.0")]
+	[global::System.CodeDom.Compiler.GeneratedCodeAttribute("Xamarin.Android.Build.Tasks", "1.0.0.0")]
 	public partial class Resource
 	{
 		
diff --git a/Demos.DesktopGL/Demos.DesktopGL.csproj b/Demos.DesktopGL/Demos.DesktopGL.csproj
index 05930bc..14808c5 100644
--- a/Demos.DesktopGL/Demos.DesktopGL.csproj
+++ b/Demos.DesktopGL/Demos.DesktopGL.csproj
@@ -2,7 +2,7 @@
 
     <PropertyGroup>
         <OutputType>Exe</OutputType>
-        <TargetFramework>net462</TargetFramework>
+        <TargetFramework>netcoreapp3.1</TargetFramework>
     </PropertyGroup>
 
     <ItemGroup>
@@ -13,8 +13,8 @@
     </ItemGroup>
 
     <ItemGroup>
-        <PackageReference Include="MonoGame.Content.Builder" Version="3.7.0.9" />
-        <PackageReference Include="MonoGame.Framework.DesktopGL" Version="3.7.0.1708" />
+        <PackageReference Include="MonoGame.Content.Builder.Task" Version="3.8.0.1641" />
+        <PackageReference Include="MonoGame.Framework.DesktopGL" Version="3.8.0.1641" />
     </ItemGroup>
 
     <ItemGroup>
diff --git a/Demos/Demos.csproj b/Demos/Demos.csproj
index fd4d84e..e0742c1 100644
--- a/Demos/Demos.csproj
+++ b/Demos/Demos.csproj
@@ -11,7 +11,7 @@
     </ItemGroup>
 
     <ItemGroup>
-        <PackageReference Include="MonoGame.Framework.Portable" Version="3.7.1.189">
+        <PackageReference Include="MonoGame.Framework.DesktopGL" Version="3.8.0.1641">
             <PrivateAssets>all</PrivateAssets>
         </PackageReference>
     </ItemGroup>
diff --git a/Demos/GameImpl.cs b/Demos/GameImpl.cs
index 5ff94f0..f2c0315 100644
--- a/Demos/GameImpl.cs
+++ b/Demos/GameImpl.cs
@@ -32,6 +32,10 @@ namespace Demos {
         }
 
         protected override void LoadContent() {
+            // TODO remove with MonoGame 3.8.1 https://github.com/MonoGame/MonoGame/issues/7298
+            this.GraphicsDeviceManager.PreferredBackBufferWidth = 1280;
+            this.GraphicsDeviceManager.PreferredBackBufferHeight = 720;
+            this.GraphicsDeviceManager.ApplyChanges();
             base.LoadContent();
 
             var tex = LoadContent<Texture2D>("Textures/Test");
diff --git a/Sandbox/Content/Content.mgcb b/Sandbox/Content/Content.mgcb
index 45d0b90..7749651 100644
--- a/Sandbox/Content/Content.mgcb
+++ b/Sandbox/Content/Content.mgcb
@@ -10,7 +10,7 @@
 
 #-------------------------------- References --------------------------------#
 
-/reference:..\bin\Debug\net462\MonoGame.Extended.Content.Pipeline.dll
+/reference:..\bin\Debug\netcoreapp3.1\MonoGame.Extended.Content.Pipeline.dll
 
 #---------------------------------- Content ---------------------------------#
 
diff --git a/Sandbox/GameImpl.cs b/Sandbox/GameImpl.cs
index fd56602..ef2dbcb 100644
--- a/Sandbox/GameImpl.cs
+++ b/Sandbox/GameImpl.cs
@@ -40,6 +40,11 @@ namespace Sandbox {
         }
 
         protected override void LoadContent() {
+            // TODO remove with MonoGame 3.8.1 https://github.com/MonoGame/MonoGame/issues/7298
+            this.GraphicsDeviceManager.PreferredBackBufferWidth = 1280;
+            this.GraphicsDeviceManager.PreferredBackBufferHeight = 720;
+            this.GraphicsDeviceManager.ApplyChanges();
+
             base.LoadContent();
 
             this.Components.Add(this.rawContent = new RawContentManager(this.Services));
diff --git a/Sandbox/Sandbox.csproj b/Sandbox/Sandbox.csproj
index db72943..1e8b101 100644
--- a/Sandbox/Sandbox.csproj
+++ b/Sandbox/Sandbox.csproj
@@ -2,7 +2,7 @@
 
     <PropertyGroup>
         <OutputType>Exe</OutputType>
-        <TargetFramework>net462</TargetFramework>
+        <TargetFramework>netcoreapp3.1</TargetFramework>
     </PropertyGroup>
 
     <ItemGroup>
@@ -14,10 +14,10 @@
     </ItemGroup>
 
     <ItemGroup>
-        <PackageReference Include="MonoGame.Content.Builder" Version="3.7.0.9" />
+        <PackageReference Include="MonoGame.Content.Builder.Task" Version="3.8.0.1641" />
         <PackageReference Include="MonoGame.Extended.Content.Pipeline" Version="3.7.0" />
         <PackageReference Include="MonoGame.Extended.Tiled" Version="3.7.0" />
-        <PackageReference Include="MonoGame.Framework.DesktopGL" Version="3.7.0.1708" />
+        <PackageReference Include="MonoGame.Framework.DesktopGL" Version="3.8.0.1641" />
     </ItemGroup>
 
     <ItemGroup>