diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 5f3ee93a501..f938fedd8bb 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -67,14 +67,14 @@
     </Dependency>
   </ProductDependencies>
   <ToolsetDependencies>
-    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="8.0.0-beta.25563.4">
+    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="8.0.0-beta.25605.4">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>952abb7faea30d565b847d31411d019904a613a0</Sha>
+      <Sha>f922da012fe84ec4bd6e78ed483de7d6b9f2f564</Sha>
     </Dependency>
     <!-- Intermediate is necessary for source build. -->
-    <Dependency Name="Microsoft.SourceBuild.Intermediate.arcade" Version="8.0.0-beta.25563.4">
+    <Dependency Name="Microsoft.SourceBuild.Intermediate.arcade" Version="8.0.0-beta.25605.4">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>952abb7faea30d565b847d31411d019904a613a0</Sha>
+      <Sha>f922da012fe84ec4bd6e78ed483de7d6b9f2f564</Sha>
       <SourceBuild RepoName="arcade" ManagedOnly="true" />
     </Dependency>
     <Dependency Name="Microsoft.DotNet.XliffTasks" Version="1.0.0-beta.23475.1" CoherentParentDependency="Microsoft.DotNet.Arcade.Sdk">
@@ -96,9 +96,9 @@
       <Sha>919d4dbfb0dffb35a702417e28ceea652d248bc6</Sha>
       <SourceBuild RepoName="roslyn" ManagedOnly="true" />
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.XUnitExtensions" Version="8.0.0-beta.25563.4">
+    <Dependency Name="Microsoft.DotNet.XUnitExtensions" Version="8.0.0-beta.25605.4">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>952abb7faea30d565b847d31411d019904a613a0</Sha>
+      <Sha>f922da012fe84ec4bd6e78ed483de7d6b9f2f564</Sha>
     </Dependency>
   </ToolsetDependencies>
 </Dependencies>
diff --git a/eng/Versions.props b/eng/Versions.props
index 4f079492445..99549bbbedd 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -2,7 +2,7 @@
 <!-- Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the MIT license. See License.txt in the project root for full license information. -->
 <Project>
   <PropertyGroup>
-    <VersionPrefix>17.10.50</VersionPrefix>
+    <VersionPrefix>17.10.51</VersionPrefix>
     <DotNetFinalVersionKind>release</DotNetFinalVersionKind>
     <PackageValidationBaselineVersion>17.8.3</PackageValidationBaselineVersion>
     <AssemblyVersion>15.1.0.0</AssemblyVersion>
@@ -52,7 +52,7 @@
          Otherwise, this version of dotnet will not be installed and the build will error out. -->
     <DotNetCliVersion>$([System.Text.RegularExpressions.Regex]::Match($([System.IO.File]::ReadAllText('$(MSBuildThisFileDirectory)..\global.json')), '"dotnet": "([^"]*)"').Groups.get_Item(1))</DotNetCliVersion>
     <MicrosoftCodeAnalysisCollectionsVersion>4.2.0-1.22102.8</MicrosoftCodeAnalysisCollectionsVersion>
-    <MicrosoftDotNetXUnitExtensionsVersion>8.0.0-beta.25563.4</MicrosoftDotNetXUnitExtensionsVersion>
+    <MicrosoftDotNetXUnitExtensionsVersion>8.0.0-beta.25605.4</MicrosoftDotNetXUnitExtensionsVersion>
     <MicrosoftExtensionsDependencyModelVersion>7.0.0</MicrosoftExtensionsDependencyModelVersion>
     <MicrosoftIORedistVersion>6.0.0</MicrosoftIORedistVersion>
     <MicrosoftNetCompilersToolsetVersion>4.10.0-3.24175.2</MicrosoftNetCompilersToolsetVersion>
diff --git a/eng/common/templates-official/job/source-build.yml b/eng/common/templates-official/job/source-build.yml
index 7b9c58a90c5..f75400757d1 100644
--- a/eng/common/templates-official/job/source-build.yml
+++ b/eng/common/templates-official/job/source-build.yml
@@ -61,7 +61,7 @@ jobs:
 
       ${{ if eq(variables['System.TeamProject'], 'internal') }}:
         name: $[replace(replace(eq(contains(coalesce(variables['System.PullRequest.TargetBranch'], variables['Build.SourceBranch'], 'refs/heads/main'), 'release'), 'true'), True, 'NetCore1ESPool-Svc-Internal'), False, 'NetCore1ESPool-Internal')]
-        image: 1es-mariner-2
+        image: 1es-azurelinux-3
         os: linux
 
   ${{ if ne(parameters.platform.pool, '') }}:
diff --git a/eng/common/templates-official/job/source-index-stage1.yml b/eng/common/templates-official/job/source-index-stage1.yml
index 0579e692fc8..8de0dfaf349 100644
--- a/eng/common/templates-official/job/source-index-stage1.yml
+++ b/eng/common/templates-official/job/source-index-stage1.yml
@@ -6,7 +6,7 @@ parameters:
   sourceIndexBuildCommand: powershell -NoLogo -NoProfile -ExecutionPolicy Bypass -Command "eng/common/build.ps1 -restore -build -binarylog -ci"
   preSteps: []
   binlogPath: artifacts/log/Debug/Build.binlog
-  condition: ''
+  condition: eq(variables['Build.SourceBranch'], 'refs/heads/main')
   dependsOn: ''
   pool: ''
 
diff --git a/eng/common/templates-official/steps/source-build.yml b/eng/common/templates-official/steps/source-build.yml
index b63043da4b9..c307825c912 100644
--- a/eng/common/templates-official/steps/source-build.yml
+++ b/eng/common/templates-official/steps/source-build.yml
@@ -47,7 +47,7 @@ steps:
     # in the default public locations.
     internalRuntimeDownloadArgs=
     if [ '$(dotnetbuilds-internal-container-read-token-base64)' != '$''(dotnetbuilds-internal-container-read-token-base64)' ]; then
-      internalRuntimeDownloadArgs='/p:DotNetRuntimeSourceFeed=https://dotnetbuilds.blob.core.windows.net/internal /p:DotNetRuntimeSourceFeedKey=$(dotnetbuilds-internal-container-read-token-base64) --runtimesourcefeed https://dotnetbuilds.blob.core.windows.net/internal --runtimesourcefeedkey $(dotnetbuilds-internal-container-read-token-base64)'
+      internalRuntimeDownloadArgs='/p:DotNetRuntimeSourceFeed=https://ci.dot.net/internal /p:DotNetRuntimeSourceFeedKey=$(dotnetbuilds-internal-container-read-token-base64) --runtimesourcefeed https://ci.dot.net/internal --runtimesourcefeedkey $(dotnetbuilds-internal-container-read-token-base64)'
     fi
 
     buildConfig=Release
diff --git a/eng/common/templates/steps/source-build.yml b/eng/common/templates/steps/source-build.yml
index ae06b26ea37..d08a0e92caa 100644
--- a/eng/common/templates/steps/source-build.yml
+++ b/eng/common/templates/steps/source-build.yml
@@ -47,7 +47,7 @@ steps:
     # in the default public locations.
     internalRuntimeDownloadArgs=
     if [ '$(dotnetbuilds-internal-container-read-token-base64)' != '$''(dotnetbuilds-internal-container-read-token-base64)' ]; then
-      internalRuntimeDownloadArgs='/p:DotNetRuntimeSourceFeed=https://dotnetbuilds.blob.core.windows.net/internal /p:DotNetRuntimeSourceFeedKey=$(dotnetbuilds-internal-container-read-token-base64) --runtimesourcefeed https://dotnetbuilds.blob.core.windows.net/internal --runtimesourcefeedkey $(dotnetbuilds-internal-container-read-token-base64)'
+      internalRuntimeDownloadArgs='/p:DotNetRuntimeSourceFeed=https://ci.dot.net/internal /p:DotNetRuntimeSourceFeedKey=$(dotnetbuilds-internal-container-read-token-base64) --runtimesourcefeed https://ci.dot.net/internal --runtimesourcefeedkey $(dotnetbuilds-internal-container-read-token-base64)'
     fi
 
     buildConfig=Release
diff --git a/global.json b/global.json
index 4a7b5825391..d136985112d 100644
--- a/global.json
+++ b/global.json
@@ -10,6 +10,6 @@
     "xcopy-msbuild": "17.8.5"
   },
   "msbuild-sdks": {
-    "Microsoft.DotNet.Arcade.Sdk": "8.0.0-beta.25563.4"
+    "Microsoft.DotNet.Arcade.Sdk": "8.0.0-beta.25605.4"
   }
 }