diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 249237bb8cb8..b610bdb2b951 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -339,9 +339,9 @@
       <Sha>8161720ab114cbe447ede936aa07d2ed5cb8924b</Sha>
       <SourceBuild RepoName="xdt" ManagedOnly="true" />
     </Dependency>
-    <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-reference-packages" Version="10.0.0-alpha.1.24515.1">
+    <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-reference-packages" Version="10.0.0-alpha.1.24521.1">
       <Uri>https://github.com/dotnet/source-build-reference-packages</Uri>
-      <Sha>4660d88cf953fbbd14192c787053a20246ce1aeb</Sha>
+      <Sha>ccd0927e3823fb178c7151594f5d2eaba81bba81</Sha>
       <SourceBuild RepoName="source-build-reference-packages" ManagedOnly="true" />
     </Dependency>
     <!-- Not updated automatically -->
diff --git a/eng/Versions.props b/eng/Versions.props
index 966ccc508f41..a459f8ceb90e 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -172,7 +172,7 @@
     <!-- Packages from dotnet/source-build-externals -->
     <MicrosoftSourceBuildIntermediatesourcebuildexternalsVersion>10.0.0-alpha.1.24516.1</MicrosoftSourceBuildIntermediatesourcebuildexternalsVersion>
     <!-- Packages from dotnet/source-build-reference-packages -->
-    <MicrosoftSourceBuildIntermediatesourcebuildreferencepackagesVersion>10.0.0-alpha.1.24515.1</MicrosoftSourceBuildIntermediatesourcebuildreferencepackagesVersion>
+    <MicrosoftSourceBuildIntermediatesourcebuildreferencepackagesVersion>10.0.0-alpha.1.24521.1</MicrosoftSourceBuildIntermediatesourcebuildreferencepackagesVersion>
     <!-- Packages from dotnet/symreader -->
     <MicrosoftSourceBuildIntermediatesymreaderVersion>2.2.0-beta.24515.1</MicrosoftSourceBuildIntermediatesymreaderVersion>
     <!-- Packages from dotnet/xdt -->