diff --git a/eng/SourceBuildPrebuiltBaseline.xml b/eng/SourceBuildPrebuiltBaseline.xml
index ced31dc1641..4416e9693af 100644
--- a/eng/SourceBuildPrebuiltBaseline.xml
+++ b/eng/SourceBuildPrebuiltBaseline.xml
@@ -17,6 +17,7 @@
     <UsagePattern IdentityGlob="System.CodeDom/8.0.0" />
     <UsagePattern IdentityGlob="System.Resources.Extensions/8.0.0" />
     <UsagePattern IdentityGlob="System.Diagnostics.DiagnosticSource/8.0.0" />
+    <UsagePattern IdentityGlob="System.Threading.Tasks.Dataflow/8.0.0" />
 
     <UsagePattern IdentityGlob="Microsoft.AspNetCore.App.Runtime.linux-x64/9.0.*" />
     <UsagePattern IdentityGlob="Microsoft.NETCore.App.Crossgen2.linux-x64/9.0.*" />
diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 5820fde4b23..c25919fc85b 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Dependencies>
   <ProductDependencies>
-    <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-reference-packages" Version="9.0.0-alpha.1.24352.1">
+    <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-reference-packages" Version="9.0.0-alpha.1.24405.2">
       <Uri>/~https://github.com/dotnet/source-build-reference-packages</Uri>
-      <Sha>cc732c57199f725857c201da146525e3be6bc504</Sha>
+      <Sha>0d066e61a30c2599d0ced871ea45acf0e10571af</Sha>
       <SourceBuild RepoName="source-build-reference-packages" ManagedOnly="true" />
     </Dependency>
     <!-- Intermediate is necessary for source build. -->