diff --git a/eng/Version.Details.props b/eng/Version.Details.props
index 0852ee929424..4ca16033134a 100644
--- a/eng/Version.Details.props
+++ b/eng/Version.Details.props
@@ -102,9 +102,9 @@ This file should be imported by eng/Versions.props
     <MicrosoftCodeAnalysisCSharpWorkspacesPackageVersion>4.13.0-3.24613.7</MicrosoftCodeAnalysisCSharpWorkspacesPackageVersion>
     <MicrosoftCodeAnalysisExternalAccessAspNetCorePackageVersion>4.13.0-3.24613.7</MicrosoftCodeAnalysisExternalAccessAspNetCorePackageVersion>
     <!-- dotnet/extensions dependencies -->
-    <MicrosoftExtensionsCachingHybridPackageVersion>9.8.0-preview.1.25401.1</MicrosoftExtensionsCachingHybridPackageVersion>
-    <MicrosoftExtensionsDiagnosticsTestingPackageVersion>9.8.0-preview.1.25401.1</MicrosoftExtensionsDiagnosticsTestingPackageVersion>
-    <MicrosoftExtensionsTimeProviderTestingPackageVersion>9.8.0-preview.1.25401.1</MicrosoftExtensionsTimeProviderTestingPackageVersion>
+    <MicrosoftExtensionsCachingHybridPackageVersion>9.9.0-preview.1.25409.1</MicrosoftExtensionsCachingHybridPackageVersion>
+    <MicrosoftExtensionsDiagnosticsTestingPackageVersion>9.9.0-preview.1.25409.1</MicrosoftExtensionsDiagnosticsTestingPackageVersion>
+    <MicrosoftExtensionsTimeProviderTestingPackageVersion>9.9.0-preview.1.25409.1</MicrosoftExtensionsTimeProviderTestingPackageVersion>
     <!-- _git/dotnet-optimization dependencies -->
     <optimizationlinuxarm64MIBCRuntimePackageVersion>1.0.0-prerelease.25374.3</optimizationlinuxarm64MIBCRuntimePackageVersion>
     <optimizationlinuxx64MIBCRuntimePackageVersion>1.0.0-prerelease.25374.3</optimizationlinuxx64MIBCRuntimePackageVersion>
diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index b4b82aa78905..60874c5c5092 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -390,17 +390,17 @@
       <Uri>https://github.com/dotnet/dotnet</Uri>
       <Sha>6a953e76162f3f079405f80e28664fa51b136740</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Extensions.Caching.Hybrid" Version="9.8.0-preview.1.25401.1">
+    <Dependency Name="Microsoft.Extensions.Caching.Hybrid" Version="9.9.0-preview.1.25409.1">
       <Uri>https://github.com/dotnet/extensions</Uri>
-      <Sha>c6529a0a68989cc881e4add4872c344917bc1ca9</Sha>
+      <Sha>ed336d147b46d36edad3e9441398de636b67cf5d</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Extensions.Diagnostics.Testing" Version="9.8.0-preview.1.25401.1">
+    <Dependency Name="Microsoft.Extensions.Diagnostics.Testing" Version="9.9.0-preview.1.25409.1">
       <Uri>https://github.com/dotnet/extensions</Uri>
-      <Sha>c6529a0a68989cc881e4add4872c344917bc1ca9</Sha>
+      <Sha>ed336d147b46d36edad3e9441398de636b67cf5d</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Extensions.TimeProvider.Testing" Version="9.8.0-preview.1.25401.1">
+    <Dependency Name="Microsoft.Extensions.TimeProvider.Testing" Version="9.9.0-preview.1.25409.1">
       <Uri>https://github.com/dotnet/extensions</Uri>
-      <Sha>c6529a0a68989cc881e4add4872c344917bc1ca9</Sha>
+      <Sha>ed336d147b46d36edad3e9441398de636b67cf5d</Sha>
     </Dependency>
     <Dependency Name="optimization.windows_nt-x64.MIBC.Runtime" Version="1.0.0-prerelease.25374.3">
       <Uri>https://dev.azure.com/dnceng/internal/_git/dotnet-optimization</Uri>