diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 71151d75d2fa..523ed2d62f51 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -189,9 +189,9 @@
       <Uri>https://dev.azure.com/dnceng/internal/_git/dotnet-runtime</Uri>
       <Sha>18fd75c847399745c43b5970fec840ba71064e80</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-externals" Version="8.0.0-alpha.1.26309.12">
-      <Uri>https://dev.azure.com/dnceng/internal/_git/dotnet-source-build-externals</Uri>
-      <Sha>15f64ab037253b38c22fa801dccf26d809af95fd</Sha>
+    <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-externals" Version="8.0.0-alpha.1.26403.1">
+      <Uri>https://github.com/dotnet/source-build-externals</Uri>
+      <Sha>d64f0dd8dea2a4cd6e956f1f84137a3c58d70bd9</Sha>
       <SourceBuild RepoName="source-build-externals" ManagedOnly="true" />
     </Dependency>
     <Dependency Name="Microsoft.SourceBuild.Intermediate.symreader" Version="2.0.0-beta-23228-03">
diff --git a/eng/Versions.props b/eng/Versions.props
index 11b47e91d767..91e2cfe8b769 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -165,7 +165,7 @@
     <MicrosoftDotNetBuildTasksTemplatingVersion>8.0.0-beta.26371.5</MicrosoftDotNetBuildTasksTemplatingVersion>
     <MicrosoftDotNetRemoteExecutorVersion>8.0.0-beta.26371.5</MicrosoftDotNetRemoteExecutorVersion>
     <!-- Packages from dotnet/source-build-externals -->
-    <MicrosoftSourceBuildIntermediatesourcebuildexternalsVersion>8.0.0-alpha.1.26309.12</MicrosoftSourceBuildIntermediatesourcebuildexternalsVersion>
+    <MicrosoftSourceBuildIntermediatesourcebuildexternalsVersion>8.0.0-alpha.1.26403.1</MicrosoftSourceBuildIntermediatesourcebuildexternalsVersion>
     <!-- Packages from dotnet/source-build-assets -->
     <MicrosoftSourceBuildIntermediatesourcebuildassetsVersion>8.0.0-alpha.1.26301.2</MicrosoftSourceBuildIntermediatesourcebuildassetsVersion>
     <!-- Packages from dotnet/symreader -->