diff --git a/.github/policies/resourceManagement.yml b/.github/policies/resourceManagement.yml
index 9b765de6b1ae..9ee76e96a12c 100644
--- a/.github/policies/resourceManagement.yml
+++ b/.github/policies/resourceManagement.yml
@@ -379,17 +379,6 @@ configuration:
       - addMilestone:
           milestone: 10.0-preview1
       description: '[Milestone Assignments] Assign Milestone to PRs merged to the `main` branch'
-    - if:
-      - payloadType: Pull_Request
-      - isAction:
-          action: Closed
-      - targetsBranch:
-          branch: release/9.0
-      then:
-      - removeMilestone
-      - addMilestone:
-          milestone: 9.0.1
-      description: '[Milestone Assignments] Assign Milestone to PRs merged to release/9.0 branch'
     - if:
       - payloadType: Issues
       - isAction:
@@ -487,21 +476,6 @@ configuration:
 
             Otherwise, please add `tell-mode` label.
       description: Add release/8.0 targeting PRs to the servicing project
-    - if:
-      - payloadType: Pull_Request
-      - isAction:
-          action: Opened
-      - targetsBranch:
-          branch: release/6.0
-      then:
-      - addMilestone:
-          milestone: 6.0.x
-      - addReply:
-          reply: >-
-            Hi @${issueAuthor}. If this is not a tell-mode PR, please make sure to follow the instructions laid out in the [servicing process](https://aka.ms/aspnet/servicing) document.
-
-            Otherwise, please add `tell-mode` label.
-      description: Add release/6.0 targeting PRs to the servicing project
     - if:
       - payloadType: Pull_Request
       - isAction:
@@ -561,12 +535,12 @@ configuration:
       - isAction:
           action: Closed
       - targetsBranch:
-          branch: release/6.0
+          branch: release/9.0
       then:
       - removeMilestone
       - addMilestone:
-          milestone: 6.0.36
-      description: '[Milestone Assignments] Assign Milestone to PRs merged to release/6.0 branch'
+          milestone: 9.0.1
+      description: '[Milestone Assignments] Assign Milestone to PRs merged to release/9.0 branch'
     - if:
       - payloadType: Pull_Request
       - isAction:
diff --git a/NuGet.config b/NuGet.config
index b719dd5ce9a8..20e5a3a40005 100644
--- a/NuGet.config
+++ b/NuGet.config
@@ -11,8 +11,6 @@
     <add key="dotnet8" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet8/nuget/v3/index.json" />
     <add key="dotnet8-transport" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet8-transport/nuget/v3/index.json" />
     <add key="dotnet-public" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-public/nuget/v3/index.json" />
-    <!-- Used for the SiteExtension bits -->
-    <add key="dotnet6-transport" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet6-transport/nuget/v3/index.json" />
     <!-- Used for the Rich Navigation indexing task -->
     <add key="richnav" value="https://pkgs.dev.azure.com/azure-public/vside/_packaging/vs-buildservices/nuget/v3/index.json" />
   </packageSources>
diff --git a/eng/Dependencies.props b/eng/Dependencies.props
index 8ecb0eb6bf65..ea0a7c089272 100644
--- a/eng/Dependencies.props
+++ b/eng/Dependencies.props
@@ -141,10 +141,10 @@ and are generated based on the last package release.
 
   <ItemGroup Label=".NET team dependencies (Non-source-build)" Condition="'$(DotNetBuildSourceOnly)' != 'true'">
     <LatestPackageReference Include="Microsoft.AspNet.WebApi.Client" />
-    <LatestPackageReference Include="Microsoft.AspNetCore.AzureAppServices.SiteExtension.6.0.x64" />
-    <LatestPackageReference Include="Microsoft.AspNetCore.AzureAppServices.SiteExtension.6.0.x86" />
     <LatestPackageReference Include="Microsoft.AspNetCore.AzureAppServices.SiteExtension.8.0.x64" />
     <LatestPackageReference Include="Microsoft.AspNetCore.AzureAppServices.SiteExtension.8.0.x86" />
+    <LatestPackageReference Include="Microsoft.AspNetCore.AzureAppServices.SiteExtension.9.0.x64" />
+    <LatestPackageReference Include="Microsoft.AspNetCore.AzureAppServices.SiteExtension.9.0.x86" />
     <LatestPackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.Runtime" />
     <LatestPackageReference Include="Microsoft.Internal.Runtime.AspNetCore.Transport" />
     <LatestPackageReference Include="Microsoft.Bcl.AsyncInterfaces" />
diff --git a/eng/Versions.props b/eng/Versions.props
index c8baddec071f..2a29a95963a1 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -274,12 +274,12 @@
     <SystemNetExperimentalMsQuicVersion>5.0.0-alpha.20560.6</SystemNetExperimentalMsQuicVersion>
     <SystemSecurityPrincipalWindowsVersion>5.0.0</SystemSecurityPrincipalWindowsVersion>
     <!-- Packages from downlevel branches used for site extension build. -->
-    <MicrosoftAspNetCoreAzureAppServicesSiteExtension60Version>6.0.25-servicing-23523-15</MicrosoftAspNetCoreAzureAppServicesSiteExtension60Version>
-    <MicrosoftAspNetCoreAzureAppServicesSiteExtension60x64Version>$(MicrosoftAspNetCoreAzureAppServicesSiteExtension60Version)</MicrosoftAspNetCoreAzureAppServicesSiteExtension60x64Version>
-    <MicrosoftAspNetCoreAzureAppServicesSiteExtension60x86Version>$(MicrosoftAspNetCoreAzureAppServicesSiteExtension60Version)</MicrosoftAspNetCoreAzureAppServicesSiteExtension60x86Version>
     <MicrosoftAspNetCoreAzureAppServicesSiteExtension80Version>8.0.0-rtm-23531-12</MicrosoftAspNetCoreAzureAppServicesSiteExtension80Version>
     <MicrosoftAspNetCoreAzureAppServicesSiteExtension80x64Version>$(MicrosoftAspNetCoreAzureAppServicesSiteExtension80Version)</MicrosoftAspNetCoreAzureAppServicesSiteExtension80x64Version>
     <MicrosoftAspNetCoreAzureAppServicesSiteExtension80x86Version>$(MicrosoftAspNetCoreAzureAppServicesSiteExtension80Version)</MicrosoftAspNetCoreAzureAppServicesSiteExtension80x86Version>
+    <MicrosoftAspNetCoreAzureAppServicesSiteExtension90Version>9.0.0-rtm-24529-3</MicrosoftAspNetCoreAzureAppServicesSiteExtension90Version>
+    <MicrosoftAspNetCoreAzureAppServicesSiteExtension90x64Version>$(MicrosoftAspNetCoreAzureAppServicesSiteExtension90Version)</MicrosoftAspNetCoreAzureAppServicesSiteExtension90x64Version>
+    <MicrosoftAspNetCoreAzureAppServicesSiteExtension90x86Version>$(MicrosoftAspNetCoreAzureAppServicesSiteExtension90Version)</MicrosoftAspNetCoreAzureAppServicesSiteExtension90x86Version>
     <!-- 3rd party dependencies -->
     <AzureIdentityVersion>1.11.4</AzureIdentityVersion>
     <AngleSharpVersion>0.9.9</AngleSharpVersion>
diff --git a/src/SiteExtensions/LoggingAggregate/src/Microsoft.AspNetCore.AzureAppServices.SiteExtension/Microsoft.AspNetCore.AzureAppServices.SiteExtension.csproj b/src/SiteExtensions/LoggingAggregate/src/Microsoft.AspNetCore.AzureAppServices.SiteExtension/Microsoft.AspNetCore.AzureAppServices.SiteExtension.csproj
index b0624cf9f9ca..f3b42389f2cb 100644
--- a/src/SiteExtensions/LoggingAggregate/src/Microsoft.AspNetCore.AzureAppServices.SiteExtension/Microsoft.AspNetCore.AzureAppServices.SiteExtension.csproj
+++ b/src/SiteExtensions/LoggingAggregate/src/Microsoft.AspNetCore.AzureAppServices.SiteExtension/Microsoft.AspNetCore.AzureAppServices.SiteExtension.csproj
@@ -29,10 +29,10 @@
       $(DefaultNetCoreTargetFramework), add previous SiteExtension packages to the list below. Remove
       entries when packages aren't needed in the bundle anymore.
       -->
-    <Reference Include="Microsoft.AspNetCore.AzureAppServices.SiteExtension.6.0.x64" PrivateAssets="All" />
-    <Reference Include="Microsoft.AspNetCore.AzureAppServices.SiteExtension.6.0.x86" PrivateAssets="All" />
     <Reference Include="Microsoft.AspNetCore.AzureAppServices.SiteExtension.8.0.x64" PrivateAssets="All" />
     <Reference Include="Microsoft.AspNetCore.AzureAppServices.SiteExtension.8.0.x86" PrivateAssets="All" />
+    <Reference Include="Microsoft.AspNetCore.AzureAppServices.SiteExtension.9.0.x64" PrivateAssets="All" />
+    <Reference Include="Microsoft.AspNetCore.AzureAppServices.SiteExtension.9.0.x86" PrivateAssets="All" />
     <!--
       Bundle the just-built LB.csproj package content into this one the easy way. See
       UpdateLatestPackageReferences for the hard way.