diff --git a/DotnetCliVersion.txt b/DotnetCliVersion.txt
index e290f404..d7fab98f 100644
--- a/DotnetCliVersion.txt
+++ b/DotnetCliVersion.txt
@@ -1 +1 @@
-2.2.401
\ No newline at end of file
+3.0.100
\ No newline at end of file
diff --git a/appveyor.yml b/appveyor.yml
index 6a211e2b..d3000790 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,5 +1,5 @@
-version: 0.1.3-{build}
-image: Visual Studio 2017
+version: 0.0.0-{build}
+image: Visual Studio 2019
 environment:
   myget_api_key:
     secure: 0xJoYAtR6psXCRvk1qm5czDObkeRjHKPjfe5gIExXVFPwA0VVODYv/hBZYUtz2F3
diff --git a/build/Build.cs b/build/Build.cs
index 086169bf..141fc93a 100644
--- a/build/Build.cs
+++ b/build/Build.cs
@@ -11,7 +11,7 @@ using System.Xml.Linq;
 using ICSharpCode.SharpZipLib.Zip;
 using ILRepacking;
 using Nuke.Common;
-using Nuke.Common.BuildServers;
+using Nuke.Common.CI.AppVeyor;
 using Nuke.Common.Git;
 using Nuke.Common.IO;
 using Nuke.Common.ProjectModel;
@@ -40,7 +40,7 @@ namespace LibHacBuild
         AbsolutePath ArtifactsDirectory => RootDirectory / "artifacts";
         AbsolutePath SignedArtifactsDirectory => ArtifactsDirectory / "signed";
         AbsolutePath TempDirectory => RootDirectory / ".tmp";
-        AbsolutePath CliCoreDir => TempDirectory / "hactoolnet_netcoreapp2.1";
+        AbsolutePath CliCoreDir => TempDirectory / "hactoolnet_netcoreapp3.0";
         AbsolutePath CliFrameworkDir => TempDirectory / "hactoolnet_net46";
         AbsolutePath CliNativeDir => TempDirectory / "hactoolnet_native";
         AbsolutePath CliFrameworkZip => ArtifactsDirectory / "hactoolnet.zip";
@@ -57,7 +57,7 @@ namespace LibHacBuild
         string AppVeyorVersion { get; set; }
         Dictionary<string, object> VersionProps { get; set; } = new Dictionary<string, object>();
 
-        private const string MyGetSource = "https://dotnet.myget.org/F/dotnet-core/api/v3/index.json";
+        private const string DotNetFeedSource = "https://dotnetfeed.blob.core.windows.net/dotnet-core/index.json";
         const string CertFileName = "cert.pfx";
 
         private bool IsMasterBranch => _gitVersion?.BranchName.Equals("master") ?? false;
@@ -144,7 +144,7 @@ namespace LibHacBuild
 
                 DotNetPublish(s => publishSettings
                     .SetProject(HactoolnetProject)
-                    .SetFramework("netcoreapp2.1")
+                    .SetFramework("netcoreapp3.0")
                     .SetOutput(CliCoreDir)
                     .SetNoBuild(true)
                     .SetProperties(VersionProps));
@@ -233,7 +233,7 @@ namespace LibHacBuild
                     .EnableNoBuild()
                     .SetConfiguration(Configuration);
 
-                if (EnvironmentInfo.IsUnix) settings = settings.SetProperty("TargetFramework", "netcoreapp2.1");
+                if (EnvironmentInfo.IsUnix) settings = settings.SetProperty("TargetFramework", "netcoreapp3.0");
 
                 DotNetTest(s => settings);
             });
@@ -272,7 +272,7 @@ namespace LibHacBuild
                 AbsolutePath nupkgFile = ArtifactsDirectory.GlobFiles("*.nupkg").Single();
                 AbsolutePath snupkgFile = ArtifactsDirectory.GlobFiles("*.snupkg").Single();
 
-                string apiKey = EnvironmentInfo.Variable("myget_api_key");
+                string apiKey = EnvironmentInfo.GetVariable<string>("myget_api_key");
                 DotNetNuGetPushSettings settings = new DotNetNuGetPushSettings()
                     .SetApiKey(apiKey)
                     .SetSymbolApiKey(apiKey)
@@ -298,7 +298,7 @@ namespace LibHacBuild
 
                     XDocument doc = XDocument.Load(NugetConfig);
                     doc.Element("configuration").Element("packageSources").Add(new XElement("add",
-                        new XAttribute("key", "myget"), new XAttribute("value", MyGetSource)));
+                        new XAttribute("key", "myget"), new XAttribute("value", DotNetFeedSource)));
 
                     doc.Save(NugetConfig);
 
@@ -309,7 +309,7 @@ namespace LibHacBuild
 
                     DotNetPublish(s => publishSettings
                         .SetProject(nativeProject)
-                        .SetFramework("netcoreapp2.1")
+                        .SetFramework("netcoreapp3.0")
                         .SetRuntime("win-x64")
                         .SetOutput(CliNativeDir)
                         .SetProperties(VersionProps));
@@ -559,7 +559,7 @@ namespace LibHacBuild
 
                 // Avoid having multiple signed versions of the same file
                 File.Copy(nupkgDir / "lib" / "net46" / "LibHac.dll", netFxDir / "LibHac.dll", true);
-                File.Copy(nupkgDir / "lib" / "netcoreapp2.1" / "LibHac.dll", coreFxDir / "LibHac.dll", true);
+                File.Copy(nupkgDir / "lib" / "netcoreapp3.0" / "LibHac.dll", coreFxDir / "LibHac.dll", true);
 
                 ZipDirectory(SignedArtifactsDirectory / Path.GetFileName(nupkgFile), nupkgDir, pkgFileList);
                 ZipDirectory(SignedArtifactsDirectory / Path.GetFileName(CliFrameworkZip), netFxDir);
diff --git a/build/_build.csproj b/build/_build.csproj
index eb229050..3bb692ce 100644
--- a/build/_build.csproj
+++ b/build/_build.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp2.1</TargetFramework>
+    <TargetFramework>netcoreapp3.0</TargetFramework>
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
     <RootNamespace>LibHacBuild</RootNamespace>
     <IsPackable>False</IsPackable>
@@ -10,11 +10,11 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="GitVersion.CommandLine.DotNetCore" Version="5.0.0" />
-    <PackageReference Include="ILRepack.Lib" Version="2.0.17" NoWarn="NU1701" />
-    <PackageReference Include="NuGet.CommandLine" Version="5.1.0" />
-    <PackageReference Include="Nuke.Common" Version="0.21.2" />
-    <PackageReference Include="SharpZipLib" Version="1.1.0" />
+    <PackageReference Include="GitVersion.CommandLine.DotNetCore" Version="5.0.1" />
+    <PackageReference Include="ILRepack.Lib" Version="2.0.18" NoWarn="NU1701" />
+    <PackageReference Include="NuGet.CommandLine" Version="5.2.0" />
+    <PackageReference Include="Nuke.Common" Version="0.22.2" />
+    <PackageReference Include="SharpZipLib" Version="1.2.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/src/LibHac/LibHac.csproj b/src/LibHac/LibHac.csproj
index f561d890..5a01d942 100644
--- a/src/LibHac/LibHac.csproj
+++ b/src/LibHac/LibHac.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Library</OutputType>
-    <TargetFrameworks>netcoreapp2.1;netstandard2.0;net46</TargetFrameworks>
+    <TargetFrameworks>netcoreapp3.0;netstandard2.0;net46</TargetFrameworks>
     <LangVersion>8.0</LangVersion>
   </PropertyGroup>
 
@@ -30,7 +30,7 @@
     <DefineConstants>$(DefineConstants);USE_RSA_CNG</DefineConstants>
   </PropertyGroup>
 
-  <PropertyGroup Condition=" '$(TargetFramework)' == 'netcoreapp2.1' ">
+  <PropertyGroup Condition=" '$(TargetFramework)' == 'netcoreapp3.0' ">
     <DefineConstants>$(DefineConstants);STREAM_SPAN;STRING_SPAN;HAS_FILE_SYSTEM_NAME;CROSS_PLATFORM</DefineConstants>
   </PropertyGroup>
 
@@ -49,10 +49,6 @@
     <PackageReference Include="System.Memory" Version="4.5.3" />
   </ItemGroup>
 
-  <ItemGroup Condition=" '$(TargetFramework)' == 'netcoreapp2.1' ">
-    <PackageReference Include="System.Runtime.CompilerServices.Unsafe" Version="4.5.2" />
-  </ItemGroup>
-
   <ItemGroup>
     <PackageReference Include="Microsoft.NETFramework.ReferenceAssemblies" PrivateAssets="All" Version="1.0.0-preview.2" />
   </ItemGroup>
diff --git a/src/hactoolnet/hactoolnet.csproj b/src/hactoolnet/hactoolnet.csproj
index bda24881..7c7a3018 100644
--- a/src/hactoolnet/hactoolnet.csproj
+++ b/src/hactoolnet/hactoolnet.csproj
@@ -2,8 +2,8 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFrameworks>netcoreapp2.1;net46</TargetFrameworks>
-    <LangVersion>7.3</LangVersion>
+    <TargetFrameworks>netcoreapp3.0;net46</TargetFrameworks>
+    <LangVersion>8.0</LangVersion>
   </PropertyGroup>
 
   <PropertyGroup>
diff --git a/tests/LibHac.Tests/LibHac.Tests.csproj b/tests/LibHac.Tests/LibHac.Tests.csproj
index b9308a3a..6d782ac9 100644
--- a/tests/LibHac.Tests/LibHac.Tests.csproj
+++ b/tests/LibHac.Tests/LibHac.Tests.csproj
@@ -1,13 +1,13 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net46;netcoreapp2.1</TargetFrameworks>
+    <TargetFrameworks>net46;netcoreapp3.0</TargetFrameworks>
 
     <IsPackable>false</IsPackable>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.2.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.3.0" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.1" />
   </ItemGroup>