diff --git a/eng/Version.Details.props b/eng/Version.Details.props
index 8e9fd67c8797..54b6f252b088 100644
--- a/eng/Version.Details.props
+++ b/eng/Version.Details.props
@@ -109,11 +109,11 @@ This file should be imported by eng/Versions.props
     <MicrosoftExtensionsDiagnosticsTestingPackageVersion>9.9.0-preview.1.25415.2</MicrosoftExtensionsDiagnosticsTestingPackageVersion>
     <MicrosoftExtensionsTimeProviderTestingPackageVersion>9.9.0-preview.1.25415.2</MicrosoftExtensionsTimeProviderTestingPackageVersion>
     <!-- _git/dotnet-optimization dependencies -->
-    <optimizationlinuxarm64MIBCRuntimePackageVersion>1.0.0-prerelease.25413.5</optimizationlinuxarm64MIBCRuntimePackageVersion>
-    <optimizationlinuxx64MIBCRuntimePackageVersion>1.0.0-prerelease.25413.5</optimizationlinuxx64MIBCRuntimePackageVersion>
-    <optimizationwindows_ntarm64MIBCRuntimePackageVersion>1.0.0-prerelease.25413.5</optimizationwindows_ntarm64MIBCRuntimePackageVersion>
-    <optimizationwindows_ntx64MIBCRuntimePackageVersion>1.0.0-prerelease.25413.5</optimizationwindows_ntx64MIBCRuntimePackageVersion>
-    <optimizationwindows_ntx86MIBCRuntimePackageVersion>1.0.0-prerelease.25413.5</optimizationwindows_ntx86MIBCRuntimePackageVersion>
+    <optimizationlinuxarm64MIBCRuntimePackageVersion>1.0.0-prerelease.25421.1</optimizationlinuxarm64MIBCRuntimePackageVersion>
+    <optimizationlinuxx64MIBCRuntimePackageVersion>1.0.0-prerelease.25421.1</optimizationlinuxx64MIBCRuntimePackageVersion>
+    <optimizationwindows_ntarm64MIBCRuntimePackageVersion>1.0.0-prerelease.25421.1</optimizationwindows_ntarm64MIBCRuntimePackageVersion>
+    <optimizationwindows_ntx64MIBCRuntimePackageVersion>1.0.0-prerelease.25421.1</optimizationwindows_ntx64MIBCRuntimePackageVersion>
+    <optimizationwindows_ntx86MIBCRuntimePackageVersion>1.0.0-prerelease.25421.1</optimizationwindows_ntx86MIBCRuntimePackageVersion>
     <!-- dotnet/msbuild dependencies -->
     <MicrosoftBuildPackageVersion>17.12.36</MicrosoftBuildPackageVersion>
     <MicrosoftBuildFrameworkPackageVersion>17.12.36</MicrosoftBuildFrameworkPackageVersion>
diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 517d73f1bb9c..17189c38e769 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -402,25 +402,25 @@
       <Uri>https://github.com/dotnet/extensions</Uri>
       <Sha>06d1dcae7dff136960daf6cf2181cedc62a51785</Sha>
     </Dependency>
-    <Dependency Name="optimization.windows_nt-x64.MIBC.Runtime" Version="1.0.0-prerelease.25413.5">
+    <Dependency Name="optimization.windows_nt-x64.MIBC.Runtime" Version="1.0.0-prerelease.25421.1">
       <Uri>https://dev.azure.com/dnceng/internal/_git/dotnet-optimization</Uri>
-      <Sha>e7f12ca10fc5b13e4ebc33244b585081da7f8bfb</Sha>
+      <Sha>b0395bd1ac86994182f1b1eb73bbdf4ce6338ca9</Sha>
     </Dependency>
-    <Dependency Name="optimization.windows_nt-x86.MIBC.Runtime" Version="1.0.0-prerelease.25413.5">
+    <Dependency Name="optimization.windows_nt-x86.MIBC.Runtime" Version="1.0.0-prerelease.25421.1">
       <Uri>https://dev.azure.com/dnceng/internal/_git/dotnet-optimization</Uri>
-      <Sha>e7f12ca10fc5b13e4ebc33244b585081da7f8bfb</Sha>
+      <Sha>b0395bd1ac86994182f1b1eb73bbdf4ce6338ca9</Sha>
     </Dependency>
-    <Dependency Name="optimization.linux-x64.MIBC.Runtime" Version="1.0.0-prerelease.25413.5">
+    <Dependency Name="optimization.linux-x64.MIBC.Runtime" Version="1.0.0-prerelease.25421.1">
       <Uri>https://dev.azure.com/dnceng/internal/_git/dotnet-optimization</Uri>
-      <Sha>e7f12ca10fc5b13e4ebc33244b585081da7f8bfb</Sha>
+      <Sha>b0395bd1ac86994182f1b1eb73bbdf4ce6338ca9</Sha>
     </Dependency>
-    <Dependency Name="optimization.windows_nt-arm64.MIBC.Runtime" Version="1.0.0-prerelease.25413.5">
+    <Dependency Name="optimization.windows_nt-arm64.MIBC.Runtime" Version="1.0.0-prerelease.25421.1">
       <Uri>https://dev.azure.com/dnceng/internal/_git/dotnet-optimization</Uri>
-      <Sha>e7f12ca10fc5b13e4ebc33244b585081da7f8bfb</Sha>
+      <Sha>b0395bd1ac86994182f1b1eb73bbdf4ce6338ca9</Sha>
     </Dependency>
-    <Dependency Name="optimization.linux-arm64.MIBC.Runtime" Version="1.0.0-prerelease.25413.5">
+    <Dependency Name="optimization.linux-arm64.MIBC.Runtime" Version="1.0.0-prerelease.25421.1">
       <Uri>https://dev.azure.com/dnceng/internal/_git/dotnet-optimization</Uri>
-      <Sha>e7f12ca10fc5b13e4ebc33244b585081da7f8bfb</Sha>
+      <Sha>b0395bd1ac86994182f1b1eb73bbdf4ce6338ca9</Sha>
     </Dependency>
     <!-- Dependencies required for source build to lift to the previously-source-built version. -->
     <!-- These versions are manually updated -->