diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 314a81b15d..ec2b0d21f7 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -19,14 +19,14 @@
     </Dependency>
   </ProductDependencies>
   <ToolsetDependencies>
-    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="9.0.0-beta.25577.5">
+    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="9.0.0-beta.25608.5">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>0890ca08513391dafe556fb326c73c6c5c6cb329</Sha>
+      <Sha>92e45d251889042fd956e18b28d489020298d864</Sha>
     </Dependency>
     <!-- Intermediate is necessary for source build. -->
-    <Dependency Name="Microsoft.SourceBuild.Intermediate.arcade" Version="9.0.0-beta.25577.5">
+    <Dependency Name="Microsoft.SourceBuild.Intermediate.arcade" Version="9.0.0-beta.25608.5">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>0890ca08513391dafe556fb326c73c6c5c6cb329</Sha>
+      <Sha>92e45d251889042fd956e18b28d489020298d864</Sha>
       <SourceBuild RepoName="arcade" ManagedOnly="true" />
     </Dependency>
     <!-- Dependencies required for source build. We'll still update manually -->
diff --git a/eng/common/core-templates/job/source-index-stage1.yml b/eng/common/core-templates/job/source-index-stage1.yml
index 662b9fcce1..ddf8c2e00d 100644
--- a/eng/common/core-templates/job/source-index-stage1.yml
+++ b/eng/common/core-templates/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: ''
   is1ESPipeline: ''
diff --git a/global.json b/global.json
index 65f109295c..36a48ec722 100644
--- a/global.json
+++ b/global.json
@@ -3,6 +3,6 @@
     "dotnet": "9.0.112"
   },
   "msbuild-sdks": {
-    "Microsoft.DotNet.Arcade.Sdk": "9.0.0-beta.25577.5"
+    "Microsoft.DotNet.Arcade.Sdk": "9.0.0-beta.25608.5"
   }
 }