diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index e97788b18860..00d7b92c469b 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -64,32 +64,32 @@
       <Sha>0b968051beac5d7c1a62a52aee7fbbbb47dc1f47</Sha>
       <SourceBuildTarball RepoName="format" ManagedOnly="true" />
     </Dependency>
-    <Dependency Name="Microsoft.Net.Compilers.Toolset" Version="4.6.0-2.23164.1">
+    <Dependency Name="Microsoft.Net.Compilers.Toolset" Version="4.6.0-2.23166.9">
       <Uri>https://github.com/dotnet/roslyn</Uri>
       <Sha>48b13597fee9df5ecfbd0b8c0758b3f46bc1d440</Sha>
       <SourceBuild RepoName="roslyn" ManagedOnly="true" />
     </Dependency>
-    <Dependency Name="Microsoft.CodeAnalysis" Version="4.6.0-2.23164.1">
+    <Dependency Name="Microsoft.CodeAnalysis" Version="4.6.0-2.23166.9">
       <Uri>https://github.com/dotnet/roslyn</Uri>
       <Sha>48b13597fee9df5ecfbd0b8c0758b3f46bc1d440</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.CodeAnalysis.CSharp" Version="4.6.0-2.23164.1">
+    <Dependency Name="Microsoft.CodeAnalysis.CSharp" Version="4.6.0-2.23166.9">
       <Uri>https://github.com/dotnet/roslyn</Uri>
       <Sha>48b13597fee9df5ecfbd0b8c0758b3f46bc1d440</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.CodeAnalysis.CSharp.CodeStyle" Version="4.6.0-2.23164.1">
+    <Dependency Name="Microsoft.CodeAnalysis.CSharp.CodeStyle" Version="4.6.0-2.23166.9">
       <Uri>https://github.com/dotnet/roslyn</Uri>
       <Sha>48b13597fee9df5ecfbd0b8c0758b3f46bc1d440</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.CodeAnalysis.CSharp.Features" Version="4.6.0-2.23164.1">
+    <Dependency Name="Microsoft.CodeAnalysis.CSharp.Features" Version="4.6.0-2.23166.9">
       <Uri>https://github.com/dotnet/roslyn</Uri>
       <Sha>48b13597fee9df5ecfbd0b8c0758b3f46bc1d440</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.6.0-2.23164.1">
+    <Dependency Name="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.6.0-2.23166.9">
       <Uri>https://github.com/dotnet/roslyn</Uri>
       <Sha>48b13597fee9df5ecfbd0b8c0758b3f46bc1d440</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.CodeAnalysis.Workspaces.MSBuild" Version="4.6.0-2.23164.1">
+    <Dependency Name="Microsoft.CodeAnalysis.Workspaces.MSBuild" Version="4.6.0-2.23166.9">
       <Uri>https://github.com/dotnet/roslyn</Uri>
       <Sha>48b13597fee9df5ecfbd0b8c0758b3f46bc1d440</Sha>
     </Dependency>
diff --git a/eng/Versions.props b/eng/Versions.props
index 8c7494b57191..91253a7b06da 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -136,13 +136,13 @@
   </PropertyGroup>
   <PropertyGroup>
     <!-- Dependencies from https://github.com/dotnet/roslyn -->
-    <MicrosoftNetCompilersToolsetPackageVersion>4.6.0-2.23164.1</MicrosoftNetCompilersToolsetPackageVersion>
-    <MicrosoftCodeAnalysisPackageVersion>4.6.0-2.23164.1</MicrosoftCodeAnalysisPackageVersion>
-    <MicrosoftCodeAnalysisCSharpPackageVersion>4.6.0-2.23164.1</MicrosoftCodeAnalysisCSharpPackageVersion>
-    <MicrosoftCodeAnalysisCSharpCodeStylePackageVersion>4.6.0-2.23164.1</MicrosoftCodeAnalysisCSharpCodeStylePackageVersion>
-    <MicrosoftCodeAnalysisCSharpFeaturesPackageVersion>4.6.0-2.23164.1</MicrosoftCodeAnalysisCSharpFeaturesPackageVersion>
-    <MicrosoftCodeAnalysisWorkspacesMSBuildPackageVersion>4.6.0-2.23164.1</MicrosoftCodeAnalysisWorkspacesMSBuildPackageVersion>
-    <MicrosoftCodeAnalysisCSharpWorkspacesPackageVersion>4.6.0-2.23164.1</MicrosoftCodeAnalysisCSharpWorkspacesPackageVersion>
+    <MicrosoftNetCompilersToolsetPackageVersion>4.6.0-2.23166.9</MicrosoftNetCompilersToolsetPackageVersion>
+    <MicrosoftCodeAnalysisPackageVersion>4.6.0-2.23166.9</MicrosoftCodeAnalysisPackageVersion>
+    <MicrosoftCodeAnalysisCSharpPackageVersion>4.6.0-2.23166.9</MicrosoftCodeAnalysisCSharpPackageVersion>
+    <MicrosoftCodeAnalysisCSharpCodeStylePackageVersion>4.6.0-2.23166.9</MicrosoftCodeAnalysisCSharpCodeStylePackageVersion>
+    <MicrosoftCodeAnalysisCSharpFeaturesPackageVersion>4.6.0-2.23166.9</MicrosoftCodeAnalysisCSharpFeaturesPackageVersion>
+    <MicrosoftCodeAnalysisWorkspacesMSBuildPackageVersion>4.6.0-2.23166.9</MicrosoftCodeAnalysisWorkspacesMSBuildPackageVersion>
+    <MicrosoftCodeAnalysisCSharpWorkspacesPackageVersion>4.6.0-2.23166.9</MicrosoftCodeAnalysisCSharpWorkspacesPackageVersion>
     <MicrosoftNetCompilersToolsetVersion>$(MicrosoftNetCompilersToolsetPackageVersion)</MicrosoftNetCompilersToolsetVersion>
     <MicrosoftCodeAnalysisWorkspacesGenAPIPackageVersion>4.6.0-2.23081.23</MicrosoftCodeAnalysisWorkspacesGenAPIPackageVersion>
   </PropertyGroup>