diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 45aeca2111..158a8b3d44 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -29,14 +29,14 @@
     </Dependency>
   </ProductDependencies>
   <ToolsetDependencies>
-    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="9.0.0-beta.23612.2">
+    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="9.0.0-beta.23613.3">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>1f6c5acef9bdf9d4bf1eded044eeec0d7d19560d</Sha>
+      <Sha>b6349a217d7e2f6b5c1831702f8beef5c171da3f</Sha>
       <SourceBuild RepoName="arcade" ManagedOnly="true" />
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.XliffTasks" Version="9.0.0-beta.23612.2">
+    <Dependency Name="Microsoft.DotNet.XliffTasks" Version="9.0.0-beta.23613.3">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>1f6c5acef9bdf9d4bf1eded044eeec0d7d19560d</Sha>
+      <Sha>b6349a217d7e2f6b5c1831702f8beef5c171da3f</Sha>
     </Dependency>
   </ToolsetDependencies>
 </Dependencies>
diff --git a/eng/common/templates/job/source-index-stage1.yml b/eng/common/templates/job/source-index-stage1.yml
index b98202aa02..7952336626 100644
--- a/eng/common/templates/job/source-index-stage1.yml
+++ b/eng/common/templates/job/source-index-stage1.yml
@@ -1,6 +1,6 @@
 parameters:
   runAsPublic: false
-  sourceIndexPackageVersion: 1.0.1-20230228.2
+  sourceIndexPackageVersion: 1.0.1-20231213.4
   sourceIndexPackageSource: https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json
   sourceIndexBuildCommand: powershell -NoLogo -NoProfile -ExecutionPolicy Bypass -Command "eng/common/build.ps1 -restore -build -binarylog -ci"
   preSteps: []
@@ -30,20 +30,20 @@ jobs:
     pool:
       ${{ if eq(variables['System.TeamProject'], 'public') }}:
         name: $(DncEngPublicBuildPool)
-        demands: ImageOverride -equals windows.vs2019.amd64.open
+        demands: ImageOverride -equals windows.vs2022.amd64.open
       ${{ if eq(variables['System.TeamProject'], 'internal') }}:
         name: $(DncEngInternalBuildPool)
-        demands: ImageOverride -equals windows.vs2019.amd64
+        demands: ImageOverride -equals windows.vs2022.amd64
 
   steps:
   - ${{ each preStep in parameters.preSteps }}:
     - ${{ preStep }}
 
   - task: UseDotNet@2
-    displayName: Use .NET Core SDK 6
+    displayName: Use .NET 8 SDK
     inputs:
       packageType: sdk
-      version: 6.0.x
+      version: 8.0.x
       installationPath: $(Agent.TempDirectory)/dotnet
       workingDirectory: $(Agent.TempDirectory)
 
diff --git a/eng/common/tools.ps1 b/eng/common/tools.ps1
index 162dee2b93..540393a663 100644
--- a/eng/common/tools.ps1
+++ b/eng/common/tools.ps1
@@ -165,11 +165,6 @@ function InitializeDotNetCli([bool]$install, [bool]$createSdkLocationFile) {
     $env:DOTNET_CLI_TELEMETRY_OPTOUT=1
   }
 
-  # Source Build uses DotNetCoreSdkDir variable
-  if ($env:DotNetCoreSdkDir -ne $null) {
-    $env:DOTNET_INSTALL_DIR = $env:DotNetCoreSdkDir
-  }
-
   # Find the first path on %PATH% that contains the dotnet.exe
   if ($useInstalledDotNetCli -and (-not $globalJsonHasRuntimes) -and ($env:DOTNET_INSTALL_DIR -eq $null)) {
     $dotnetExecutable = GetExecutableFileName 'dotnet'
diff --git a/eng/common/tools.sh b/eng/common/tools.sh
index e98daf50c6..9e979ac16f 100755
--- a/eng/common/tools.sh
+++ b/eng/common/tools.sh
@@ -123,11 +123,6 @@ function InitializeDotNetCli {
   # so it doesn't output warnings to the console.
   export LTTNG_HOME="$HOME"
 
-  # Source Build uses DotNetCoreSdkDir variable
-  if [[ -n "${DotNetCoreSdkDir:-}" ]]; then
-    export DOTNET_INSTALL_DIR="$DotNetCoreSdkDir"
-  fi
-
   # Find the first path on $PATH that contains the dotnet.exe
   if [[ "$use_installed_dotnet_cli" == true && $global_json_has_runtimes == false && -z "${DOTNET_INSTALL_DIR:-}" ]]; then
     local dotnet_path=`command -v dotnet`
diff --git a/global.json b/global.json
index e07107ab6f..f48f0fdf99 100644
--- a/global.json
+++ b/global.json
@@ -8,6 +8,6 @@
     }
   },
   "msbuild-sdks": {
-    "Microsoft.DotNet.Arcade.Sdk": "9.0.0-beta.23612.2"
+    "Microsoft.DotNet.Arcade.Sdk": "9.0.0-beta.23613.3"
   }
 }