diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index e990ce7387..7996ad90e0 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -16,9 +16,9 @@
       <SourceBuild RepoName="diagnostics" ManagedOnly="true" />
     </Dependency>
     <!-- Intermediate is necessary for source build. -->
-    <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-externals" Version="10.0.0-alpha.1.24415.1">
+    <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-externals" Version="9.0.0-alpha.1.24516.3">
       <Uri>https://github.com/dotnet/source-build-externals</Uri>
-      <Sha>2cef086137a68586fdd69848261e2a8cf8c48b73</Sha>
+      <Sha>4df883d781a4290873b3b968afc0ff0df7132507</Sha>
       <SourceBuild RepoName="source-build-externals" ManagedOnly="true" />
     </Dependency>
     <!-- Intermediate is necessary for source build. -->