diff --git a/NuGet.config b/NuGet.config
index cecd386871cd..587ae4b8d5b9 100644
--- a/NuGet.config
+++ b/NuGet.config
@@ -4,7 +4,6 @@
     <clear />
     <!--Begin: Package sources managed by Dependency Flow automation. Do not edit the sources below.-->
     <!--  Begin: Package sources from dotnet-extensions -->
-    <add key="darc-pub-dotnet-extensions-24c7e4f" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-extensions-24c7e4fc/nuget/v3/index.json" />
     <!--  End: Package sources from dotnet-extensions -->
     <!--End: Package sources managed by Dependency Flow automation. Do not edit the sources above.-->
     <add key="dotnet-eng" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json" />
diff --git a/eng/Version.Details.props b/eng/Version.Details.props
index f0b4fb87f0c8..0fbf6ab1aed7 100644
--- a/eng/Version.Details.props
+++ b/eng/Version.Details.props
@@ -99,9 +99,9 @@ This file should be imported by eng/Versions.props
     <SystemThreadingChannelsPackageVersion>11.0.0-preview.4.26202.104</SystemThreadingChannelsPackageVersion>
     <SystemThreadingRateLimitingPackageVersion>11.0.0-preview.4.26202.104</SystemThreadingRateLimitingPackageVersion>
     <!-- dotnet-extensions dependencies -->
-    <MicrosoftExtensionsCachingHybridPackageVersion>10.4.1</MicrosoftExtensionsCachingHybridPackageVersion>
-    <MicrosoftExtensionsDiagnosticsTestingPackageVersion>10.4.1</MicrosoftExtensionsDiagnosticsTestingPackageVersion>
-    <MicrosoftExtensionsTimeProviderTestingPackageVersion>10.4.1</MicrosoftExtensionsTimeProviderTestingPackageVersion>
+    <MicrosoftExtensionsCachingHybridPackageVersion>10.6.0-preview.1.26210.2</MicrosoftExtensionsCachingHybridPackageVersion>
+    <MicrosoftExtensionsDiagnosticsTestingPackageVersion>10.6.0-preview.1.26210.2</MicrosoftExtensionsDiagnosticsTestingPackageVersion>
+    <MicrosoftExtensionsTimeProviderTestingPackageVersion>10.6.0-preview.1.26210.2</MicrosoftExtensionsTimeProviderTestingPackageVersion>
     <!-- dotnet-msbuild dependencies -->
     <MicrosoftBuildPackageVersion>17.12.50</MicrosoftBuildPackageVersion>
     <MicrosoftBuildFrameworkPackageVersion>17.12.50</MicrosoftBuildFrameworkPackageVersion>
diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 1328a099fdd8..9858bdbda3dd 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -390,17 +390,17 @@
       <Uri>https://github.com/dotnet/dotnet</Uri>
       <Sha>0d6cc667e66d7bec23439335118137f78c70306c</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Extensions.Caching.Hybrid" Version="10.4.1">
+    <Dependency Name="Microsoft.Extensions.Caching.Hybrid" Version="10.6.0-preview.1.26210.2">
       <Uri>https://github.com/dotnet/extensions</Uri>
-      <Sha>24c7e4fc4f08e94d9e977bac3ab7b352762e28b2</Sha>
+      <Sha>03a9943b2a2ebbc8e2cd9336ba1defcdaf6ffefd</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Extensions.Diagnostics.Testing" Version="10.4.1">
+    <Dependency Name="Microsoft.Extensions.Diagnostics.Testing" Version="10.6.0-preview.1.26210.2">
       <Uri>https://github.com/dotnet/extensions</Uri>
-      <Sha>24c7e4fc4f08e94d9e977bac3ab7b352762e28b2</Sha>
+      <Sha>03a9943b2a2ebbc8e2cd9336ba1defcdaf6ffefd</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Extensions.TimeProvider.Testing" Version="10.4.1">
+    <Dependency Name="Microsoft.Extensions.TimeProvider.Testing" Version="10.6.0-preview.1.26210.2">
       <Uri>https://github.com/dotnet/extensions</Uri>
-      <Sha>24c7e4fc4f08e94d9e977bac3ab7b352762e28b2</Sha>
+      <Sha>03a9943b2a2ebbc8e2cd9336ba1defcdaf6ffefd</Sha>
     </Dependency>
     <Dependency Name="optimization.windows_nt-x64.MIBC.Runtime" Version="1.0.0-prerelease.26153.1">
       <Uri>https://dev.azure.com/dnceng/internal/_git/dotnet-optimization</Uri>