diff --git a/.appveyor.yml b/.appveyor.yml
index f46dcc270f..147e309707 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -1,21 +1,21 @@
 init:
-  - git config --global core.autocrlf true
+- git config --global core.autocrlf true
 branches:
   only:
-    - dev
-    - /^release\/.*$/
-    - /^(.*\/)?ci-.*$/
+  - master
+  - /^release\/.*$/
+  - /^(.*\/)?ci-.*$/
 install:
-  - ps: .\tools\update_schema.ps1
-  - git submodule update --init --recursive
-  - net start w3svc
+- ps: .\tools\update_schema.ps1
+- git submodule update --init --recursive
+- net start w3svc
 build_script:
-  - ps: .\run.ps1 default-build
+- ps: .\run.ps1 default-build
 clone_depth: 1
 environment:
   global:
     DOTNET_SKIP_FIRST_TIME_EXPERIENCE: true
     DOTNET_CLI_TELEMETRY_OPTOUT: 1
-test: off
-deploy: off
+test: 'off'
+deploy: 'off'
 os: Visual Studio 2017
diff --git a/.vsts-pipelines/builds/ci-internal.yml b/.vsts-pipelines/builds/ci-internal.yml
index 260baf4536..f0b1d1573d 100644
--- a/.vsts-pipelines/builds/ci-internal.yml
+++ b/.vsts-pipelines/builds/ci-internal.yml
@@ -7,7 +7,7 @@ resources:
   - repository: buildtools
     type: git
     name: aspnet-BuildTools
-    ref: refs/heads/release/2.2
+    ref: refs/heads/master
 
 phases:
 - template: ../templates/build-steps.yml
diff --git a/.vsts-pipelines/builds/ci-public.yml b/.vsts-pipelines/builds/ci-public.yml
index 0ed1a241ab..448a5ed56d 100644
--- a/.vsts-pipelines/builds/ci-public.yml
+++ b/.vsts-pipelines/builds/ci-public.yml
@@ -9,7 +9,7 @@ resources:
     type: github
     endpoint: DotNet-Bot GitHub Connection
     name: aspnet/BuildTools
-    ref: refs/heads/release/2.2
+    ref: refs/heads/master
 
 phases:
 - template: ../templates/build-steps.yml
diff --git a/build/dependencies.props b/build/dependencies.props
index a181793011..b23adbabd4 100644
--- a/build/dependencies.props
+++ b/build/dependencies.props
@@ -4,49 +4,49 @@
   </PropertyGroup>
   <PropertyGroup Label="Package Versions">
     <BenchmarkDotNetPackageVersion>0.10.13</BenchmarkDotNetPackageVersion>
-    <InternalAspNetCoreSdkPackageVersion>2.2.0-preview1-17099</InternalAspNetCoreSdkPackageVersion>
-    <MicrosoftAspNetCoreAllPackageVersion>2.2.0-preview1-34825</MicrosoftAspNetCoreAllPackageVersion>
-    <MicrosoftAspNetCoreAuthenticationCorePackageVersion>2.2.0-preview1-34825</MicrosoftAspNetCoreAuthenticationCorePackageVersion>
-    <MicrosoftAspNetCoreBenchmarkRunnerSourcesPackageVersion>2.2.0-preview1-34825</MicrosoftAspNetCoreBenchmarkRunnerSourcesPackageVersion>
-    <MicrosoftAspNetCoreHostingAbstractionsPackageVersion>2.2.0-preview1-34825</MicrosoftAspNetCoreHostingAbstractionsPackageVersion>
-    <MicrosoftAspNetCoreHostingPackageVersion>2.2.0-preview1-34825</MicrosoftAspNetCoreHostingPackageVersion>
-    <MicrosoftAspNetCoreHttpExtensionsPackageVersion>2.2.0-preview1-34825</MicrosoftAspNetCoreHttpExtensionsPackageVersion>
-    <MicrosoftAspNetCoreHttpOverridesPackageVersion>2.2.0-preview1-34825</MicrosoftAspNetCoreHttpOverridesPackageVersion>
-    <MicrosoftAspNetCoreHttpPackageVersion>2.2.0-preview1-34825</MicrosoftAspNetCoreHttpPackageVersion>
-    <MicrosoftAspNetCoreHttpSysSourcesPackageVersion>2.2.0-preview1-34825</MicrosoftAspNetCoreHttpSysSourcesPackageVersion>
-    <MicrosoftAspNetCoreServerIntegrationTestingPackageVersion>0.6.0-a-preview1-test-application-17108</MicrosoftAspNetCoreServerIntegrationTestingPackageVersion>
-    <MicrosoftAspNetCoreServerKestrelPackageVersion>2.2.0-preview1-34825</MicrosoftAspNetCoreServerKestrelPackageVersion>
-    <MicrosoftAspNetCoreTestHostPackageVersion>2.2.0-preview1-34825</MicrosoftAspNetCoreTestHostPackageVersion>
-    <MicrosoftAspNetCoreTestingPackageVersion>2.2.0-preview1-34825</MicrosoftAspNetCoreTestingPackageVersion>
-    <MicrosoftAspNetCoreWebUtilitiesPackageVersion>2.2.0-preview1-34825</MicrosoftAspNetCoreWebUtilitiesPackageVersion>
+    <InternalAspNetCoreSdkPackageVersion>3.0.0-alpha1-10015</InternalAspNetCoreSdkPackageVersion>
+    <MicrosoftAspNetCoreAllPackageVersion>3.0.0-alpha1-10173</MicrosoftAspNetCoreAllPackageVersion>
+    <MicrosoftAspNetCoreAuthenticationCorePackageVersion>3.0.0-alpha1-10173</MicrosoftAspNetCoreAuthenticationCorePackageVersion>
+    <MicrosoftAspNetCoreBenchmarkRunnerSourcesPackageVersion>3.0.0-alpha1-10173</MicrosoftAspNetCoreBenchmarkRunnerSourcesPackageVersion>
+    <MicrosoftAspNetCoreHostingAbstractionsPackageVersion>3.0.0-alpha1-10173</MicrosoftAspNetCoreHostingAbstractionsPackageVersion>
+    <MicrosoftAspNetCoreHostingPackageVersion>3.0.0-alpha1-10173</MicrosoftAspNetCoreHostingPackageVersion>
+    <MicrosoftAspNetCoreHttpExtensionsPackageVersion>3.0.0-alpha1-10173</MicrosoftAspNetCoreHttpExtensionsPackageVersion>
+    <MicrosoftAspNetCoreHttpOverridesPackageVersion>3.0.0-alpha1-10173</MicrosoftAspNetCoreHttpOverridesPackageVersion>
+    <MicrosoftAspNetCoreHttpPackageVersion>3.0.0-alpha1-10173</MicrosoftAspNetCoreHttpPackageVersion>
+    <MicrosoftAspNetCoreHttpSysSourcesPackageVersion>3.0.0-alpha1-10173</MicrosoftAspNetCoreHttpSysSourcesPackageVersion>
+    <MicrosoftAspNetCoreServerIntegrationTestingPackageVersion>0.7.0-alpha1-10173</MicrosoftAspNetCoreServerIntegrationTestingPackageVersion>
+    <MicrosoftAspNetCoreServerKestrelPackageVersion>3.0.0-alpha1-10173</MicrosoftAspNetCoreServerKestrelPackageVersion>
+    <MicrosoftAspNetCoreTestHostPackageVersion>3.0.0-alpha1-10173</MicrosoftAspNetCoreTestHostPackageVersion>
+    <MicrosoftAspNetCoreTestingPackageVersion>3.0.0-alpha1-10173</MicrosoftAspNetCoreTestingPackageVersion>
+    <MicrosoftAspNetCoreWebUtilitiesPackageVersion>3.0.0-alpha1-10173</MicrosoftAspNetCoreWebUtilitiesPackageVersion>
     <MicrosoftBuildFrameworkPackageVersion>15.6.82</MicrosoftBuildFrameworkPackageVersion>
     <MicrosoftBuildUtilitiesCorePackageVersion>15.6.82</MicrosoftBuildUtilitiesCorePackageVersion>
-    <MicrosoftExtensionsBuffersMemoryPoolSourcesPackageVersion>2.2.0-preview1-34825</MicrosoftExtensionsBuffersMemoryPoolSourcesPackageVersion>
-    <MicrosoftExtensionsCommandLineUtilsSourcesPackageVersion>2.2.0-preview1-34825</MicrosoftExtensionsCommandLineUtilsSourcesPackageVersion>
-    <MicrosoftExtensionsConfigurationEnvironmentVariablesPackageVersion>2.2.0-preview1-34825</MicrosoftExtensionsConfigurationEnvironmentVariablesPackageVersion>
-    <MicrosoftExtensionsConfigurationJsonPackageVersion>2.2.0-preview1-34825</MicrosoftExtensionsConfigurationJsonPackageVersion>
-    <MicrosoftExtensionsLoggingAbstractionsPackageVersion>2.2.0-preview1-34825</MicrosoftExtensionsLoggingAbstractionsPackageVersion>
-    <MicrosoftExtensionsLoggingConsolePackageVersion>2.2.0-preview1-34825</MicrosoftExtensionsLoggingConsolePackageVersion>
-    <MicrosoftExtensionsLoggingDebugPackageVersion>2.2.0-preview1-34825</MicrosoftExtensionsLoggingDebugPackageVersion>
-    <MicrosoftExtensionsLoggingPackageVersion>2.2.0-preview1-34825</MicrosoftExtensionsLoggingPackageVersion>
-    <MicrosoftExtensionsLoggingTestingPackageVersion>2.2.0-preview1-34825</MicrosoftExtensionsLoggingTestingPackageVersion>
-    <MicrosoftExtensionsOptionsPackageVersion>2.2.0-preview1-34825</MicrosoftExtensionsOptionsPackageVersion>
+    <MicrosoftExtensionsBuffersMemoryPoolSourcesPackageVersion>3.0.0-alpha1-10173</MicrosoftExtensionsBuffersMemoryPoolSourcesPackageVersion>
+    <MicrosoftExtensionsCommandLineUtilsSourcesPackageVersion>3.0.0-alpha1-10173</MicrosoftExtensionsCommandLineUtilsSourcesPackageVersion>
+    <MicrosoftExtensionsConfigurationEnvironmentVariablesPackageVersion>3.0.0-alpha1-10173</MicrosoftExtensionsConfigurationEnvironmentVariablesPackageVersion>
+    <MicrosoftExtensionsConfigurationJsonPackageVersion>3.0.0-alpha1-10173</MicrosoftExtensionsConfigurationJsonPackageVersion>
+    <MicrosoftExtensionsLoggingAbstractionsPackageVersion>3.0.0-alpha1-10173</MicrosoftExtensionsLoggingAbstractionsPackageVersion>
+    <MicrosoftExtensionsLoggingConsolePackageVersion>3.0.0-alpha1-10173</MicrosoftExtensionsLoggingConsolePackageVersion>
+    <MicrosoftExtensionsLoggingDebugPackageVersion>3.0.0-alpha1-10173</MicrosoftExtensionsLoggingDebugPackageVersion>
+    <MicrosoftExtensionsLoggingPackageVersion>3.0.0-alpha1-10173</MicrosoftExtensionsLoggingPackageVersion>
+    <MicrosoftExtensionsLoggingTestingPackageVersion>3.0.0-alpha1-10173</MicrosoftExtensionsLoggingTestingPackageVersion>
+    <MicrosoftExtensionsOptionsPackageVersion>3.0.0-alpha1-10173</MicrosoftExtensionsOptionsPackageVersion>
     <MicrosoftNETCoreApp20PackageVersion>2.0.9</MicrosoftNETCoreApp20PackageVersion>
     <MicrosoftNETCoreApp21PackageVersion>2.1.2</MicrosoftNETCoreApp21PackageVersion>
     <MicrosoftNETCoreApp22PackageVersion>2.2.0-preview1-26618-02</MicrosoftNETCoreApp22PackageVersion>
     <MicrosoftNETCoreWindowsApiSetsPackageVersion>1.0.1</MicrosoftNETCoreWindowsApiSetsPackageVersion>
-    <MicrosoftNetHttpHeadersPackageVersion>2.2.0-preview1-34825</MicrosoftNetHttpHeadersPackageVersion>
+    <MicrosoftNetHttpHeadersPackageVersion>3.0.0-alpha1-10173</MicrosoftNetHttpHeadersPackageVersion>
     <MicrosoftNETTestSdkPackageVersion>15.6.1</MicrosoftNETTestSdkPackageVersion>
     <MicrosoftWebAdministrationPackageVersion>11.1.0</MicrosoftWebAdministrationPackageVersion>
     <NETStandardLibrary20PackageVersion>2.0.3</NETStandardLibrary20PackageVersion>
-    <SystemBuffersPackageVersion>4.5.0</SystemBuffersPackageVersion>
-    <SystemDiagnosticsEventLogPackageVersion>4.5.0</SystemDiagnosticsEventLogPackageVersion>
-    <SystemIOPipelinesPackageVersion>4.5.0</SystemIOPipelinesPackageVersion>
-    <SystemMemoryPackageVersion>4.5.1</SystemMemoryPackageVersion>
-    <SystemNetWebSocketsWebSocketProtocolPackageVersion>4.5.1</SystemNetWebSocketsWebSocketProtocolPackageVersion>
-    <SystemNumericsVectorsPackageVersion>4.5.0</SystemNumericsVectorsPackageVersion>
-    <SystemRuntimeCompilerServicesUnsafePackageVersion>4.5.1</SystemRuntimeCompilerServicesUnsafePackageVersion>
-    <SystemSecurityPrincipalWindowsPackageVersion>4.5.0</SystemSecurityPrincipalWindowsPackageVersion>
+    <SystemBuffersPackageVersion>4.6.0-preview1-26727-04</SystemBuffersPackageVersion>
+    <SystemDiagnosticsEventLogPackageVersion>4.6.0-preview1-26727-04</SystemDiagnosticsEventLogPackageVersion>
+    <SystemIOPipelinesPackageVersion>4.6.0-preview1-26727-04</SystemIOPipelinesPackageVersion>
+    <SystemMemoryPackageVersion>4.6.0-preview1-26717-04</SystemMemoryPackageVersion>
+    <SystemNetWebSocketsWebSocketProtocolPackageVersion>4.6.0-preview1-26727-04</SystemNetWebSocketsWebSocketProtocolPackageVersion>
+    <SystemNumericsVectorsPackageVersion>4.6.0-preview1-26727-04</SystemNumericsVectorsPackageVersion>
+    <SystemRuntimeCompilerServicesUnsafePackageVersion>4.6.0-preview1-26727-04</SystemRuntimeCompilerServicesUnsafePackageVersion>
+    <SystemSecurityPrincipalWindowsPackageVersion>4.6.0-preview1-26727-04</SystemSecurityPrincipalWindowsPackageVersion>
     <Tooling_NewtonsoftJsonPackageVersion>9.0.1</Tooling_NewtonsoftJsonPackageVersion>
     <XunitPackageVersion>2.3.1</XunitPackageVersion>
     <XunitRunnerVisualStudioPackageVersion>2.4.0</XunitRunnerVisualStudioPackageVersion>
diff --git a/build/repo.props b/build/repo.props
index ba3cca9388..1323b23e8d 100644
--- a/build/repo.props
+++ b/build/repo.props
@@ -15,7 +15,6 @@
   <PropertyGroup>
     <!-- These properties are use by the automation that updates dependencies.props -->
     <LineupPackageId>Internal.AspNetCore.Universe.Lineup</LineupPackageId>
-    <LineupPackageVersion>2.2.0-*</LineupPackageVersion>
     <LineupPackageRestoreSource>https://dotnet.myget.org/F/aspnetcore-dev/api/v3/index.json</LineupPackageRestoreSource>
   </PropertyGroup>
 
diff --git a/korebuild-lock.txt b/korebuild-lock.txt
index 28cd6a5b03..8c70cbad9f 100644
--- a/korebuild-lock.txt
+++ b/korebuild-lock.txt
@@ -1,2 +1,2 @@
-version:2.2.0-preview1-17102
-commithash:e7e2b5a97ca92cfc6acc4def534cb0901a6d1eb9
+version:3.0.0-alpha1-10015
+commithash:3f36e5c2f061712f76f2766c435d2555681d5c55
diff --git a/korebuild.json b/korebuild.json
index 2624779e51..b76e84272b 100644
--- a/korebuild.json
+++ b/korebuild.json
@@ -1,6 +1,6 @@
 {
-    "$schema": "https://raw.githubusercontent.com/aspnet/BuildTools/release/2.2/tools/korebuild.schema.json",
-    "channel": "release/2.2",
+    "$schema": "https://raw.githubusercontent.com/aspnet/BuildTools/master/tools/korebuild.schema.json",
+    "channel": "master",
     "toolsets": {
       "visualstudio": {
         "required": ["Windows"],
diff --git a/run.ps1 b/run.ps1
index 3b27382468..34604c7175 100644
--- a/run.ps1
+++ b/run.ps1
@@ -52,8 +52,8 @@ in the file are overridden by command line parameters.
 Example config file:
 ```json
 {
-  "$schema": "https://raw.githubusercontent.com/aspnet/BuildTools/dev/tools/korebuild.schema.json",
-  "channel": "dev",
+  "$schema": "https://raw.githubusercontent.com/aspnet/BuildTools/master/tools/korebuild.schema.json",
+  "channel": "master",
   "toolsSource": "https://aspnetcore.blob.core.windows.net/buildtools"
 }
 ```
@@ -192,7 +192,7 @@ if (!$DotNetHome) {
         else { Join-Path $PSScriptRoot '.dotnet'}
 }
 
-if (!$Channel) { $Channel = 'dev' }
+if (!$Channel) { $Channel = 'master' }
 if (!$ToolsSource) { $ToolsSource = 'https://aspnetcore.blob.core.windows.net/buildtools' }
 
 # Execute
diff --git a/run.sh b/run.sh
index 02aac15874..61f7a53385 100755
--- a/run.sh
+++ b/run.sh
@@ -248,7 +248,7 @@ if [ -f "$config_file" ]; then
     [ ! -z "${config_tools_source:-}" ] && tools_source="$config_tools_source"
 fi
 
-[ -z "$channel" ] && channel='dev'
+[ -z "$channel" ] && channel='master'
 [ -z "$tools_source" ] && tools_source='https://aspnetcore.blob.core.windows.net/buildtools'
 
 get_korebuild
diff --git a/version.props b/version.props
index 5055696e1c..e37dbcf611 100644
--- a/version.props
+++ b/version.props
@@ -1,7 +1,7 @@
 <Project>
   <PropertyGroup>
-    <VersionPrefix>2.2.0</VersionPrefix>
-    <VersionSuffix>preview1</VersionSuffix>
+    <VersionPrefix>3.0.0</VersionPrefix>
+    <VersionSuffix>alpha1</VersionSuffix>
     <PackageVersion Condition="'$(IsFinalBuild)' == 'true' AND '$(VersionSuffix)' == 'rtm' ">$(VersionPrefix)</PackageVersion>
     <PackageVersion Condition="'$(IsFinalBuild)' == 'true' AND '$(VersionSuffix)' != 'rtm' ">$(VersionPrefix)-$(VersionSuffix)-final</PackageVersion>
     <BuildNumber Condition="'$(BuildNumber)' == ''">t000</BuildNumber>