diff --git a/eng/Version.Details.props b/eng/Version.Details.props
index 82ad65afb5..d5acb9a48b 100644
--- a/eng/Version.Details.props
+++ b/eng/Version.Details.props
@@ -19,14 +19,14 @@ This file should be imported by eng/Versions.props
     <optimizationwindows_ntx64MIBCRuntimePackageVersion>1.0.0-prerelease.26272.1</optimizationwindows_ntx64MIBCRuntimePackageVersion>
     <optimizationwindows_ntx86MIBCRuntimePackageVersion>1.0.0-prerelease.26272.1</optimizationwindows_ntx86MIBCRuntimePackageVersion>
     <!-- dotnet-roslyn dependencies -->
-    <MicrosoftCodeAnalysisPackageVersion>5.8.0-1.26274.20</MicrosoftCodeAnalysisPackageVersion>
-    <MicrosoftCodeAnalysisCompilersPackageVersion>5.8.0-1.26274.20</MicrosoftCodeAnalysisCompilersPackageVersion>
-    <MicrosoftCodeAnalysisCSharpPackageVersion>5.8.0-1.26274.20</MicrosoftCodeAnalysisCSharpPackageVersion>
-    <MicrosoftCodeAnalysisEditorFeaturesPackageVersion>5.8.0-1.26274.20</MicrosoftCodeAnalysisEditorFeaturesPackageVersion>
-    <MicrosoftCodeAnalysisEditorFeaturesTextPackageVersion>5.8.0-1.26274.20</MicrosoftCodeAnalysisEditorFeaturesTextPackageVersion>
-    <MicrosoftCodeAnalysisExternalAccessFSharpPackageVersion>5.8.0-1.26274.20</MicrosoftCodeAnalysisExternalAccessFSharpPackageVersion>
-    <MicrosoftCodeAnalysisFeaturesPackageVersion>5.8.0-1.26274.20</MicrosoftCodeAnalysisFeaturesPackageVersion>
-    <MicrosoftVisualStudioLanguageServicesPackageVersion>5.8.0-1.26274.20</MicrosoftVisualStudioLanguageServicesPackageVersion>
+    <MicrosoftCodeAnalysisPackageVersion>5.9.0-1.26279.9</MicrosoftCodeAnalysisPackageVersion>
+    <MicrosoftCodeAnalysisCompilersPackageVersion>5.9.0-1.26279.9</MicrosoftCodeAnalysisCompilersPackageVersion>
+    <MicrosoftCodeAnalysisCSharpPackageVersion>5.9.0-1.26279.9</MicrosoftCodeAnalysisCSharpPackageVersion>
+    <MicrosoftCodeAnalysisEditorFeaturesPackageVersion>5.9.0-1.26279.9</MicrosoftCodeAnalysisEditorFeaturesPackageVersion>
+    <MicrosoftCodeAnalysisEditorFeaturesTextPackageVersion>5.9.0-1.26279.9</MicrosoftCodeAnalysisEditorFeaturesTextPackageVersion>
+    <MicrosoftCodeAnalysisExternalAccessFSharpPackageVersion>5.9.0-1.26279.9</MicrosoftCodeAnalysisExternalAccessFSharpPackageVersion>
+    <MicrosoftCodeAnalysisFeaturesPackageVersion>5.9.0-1.26279.9</MicrosoftCodeAnalysisFeaturesPackageVersion>
+    <MicrosoftVisualStudioLanguageServicesPackageVersion>5.9.0-1.26279.9</MicrosoftVisualStudioLanguageServicesPackageVersion>
     <!-- dotnet-runtime dependencies -->
     <SystemCollectionsImmutablePackageVersion>10.0.2</SystemCollectionsImmutablePackageVersion>
     <SystemCompositionPackageVersion>10.0.2</SystemCompositionPackageVersion>
diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 07b9c1ce02..b52b2666a5 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -18,37 +18,37 @@
       <Uri>https://github.com/dotnet/msbuild</Uri>
       <Sha>4ea8215937724cd480a29c30187195b5cbda7486</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.CodeAnalysis" Version="5.8.0-1.26274.20">
+    <Dependency Name="Microsoft.CodeAnalysis" Version="5.9.0-1.26279.9">
       <Uri>https://github.com/dotnet/roslyn</Uri>
-      <Sha>560c1cca10d974ff096cb051d45c1330420e8e6a</Sha>
+      <Sha>ae3b522d4e196ac214b3e38ae77e7ec2b31806dd</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.CodeAnalysis.Features" Version="5.8.0-1.26274.20">
+    <Dependency Name="Microsoft.CodeAnalysis.Features" Version="5.9.0-1.26279.9">
       <Uri>https://github.com/dotnet/roslyn</Uri>
-      <Sha>560c1cca10d974ff096cb051d45c1330420e8e6a</Sha>
+      <Sha>ae3b522d4e196ac214b3e38ae77e7ec2b31806dd</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.CodeAnalysis.EditorFeatures" Version="5.8.0-1.26274.20">
+    <Dependency Name="Microsoft.CodeAnalysis.EditorFeatures" Version="5.9.0-1.26279.9">
       <Uri>https://github.com/dotnet/roslyn</Uri>
-      <Sha>560c1cca10d974ff096cb051d45c1330420e8e6a</Sha>
+      <Sha>ae3b522d4e196ac214b3e38ae77e7ec2b31806dd</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.CodeAnalysis.EditorFeatures.Text" Version="5.8.0-1.26274.20">
+    <Dependency Name="Microsoft.CodeAnalysis.EditorFeatures.Text" Version="5.9.0-1.26279.9">
       <Uri>https://github.com/dotnet/roslyn</Uri>
-      <Sha>560c1cca10d974ff096cb051d45c1330420e8e6a</Sha>
+      <Sha>ae3b522d4e196ac214b3e38ae77e7ec2b31806dd</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.CodeAnalysis.ExternalAccess.FSharp" Version="5.8.0-1.26274.20">
+    <Dependency Name="Microsoft.CodeAnalysis.ExternalAccess.FSharp" Version="5.9.0-1.26279.9">
       <Uri>https://github.com/dotnet/roslyn</Uri>
-      <Sha>560c1cca10d974ff096cb051d45c1330420e8e6a</Sha>
+      <Sha>ae3b522d4e196ac214b3e38ae77e7ec2b31806dd</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.CodeAnalysis.CSharp" Version="5.8.0-1.26274.20">
+    <Dependency Name="Microsoft.CodeAnalysis.CSharp" Version="5.9.0-1.26279.9">
       <Uri>https://github.com/dotnet/roslyn</Uri>
-      <Sha>560c1cca10d974ff096cb051d45c1330420e8e6a</Sha>
+      <Sha>ae3b522d4e196ac214b3e38ae77e7ec2b31806dd</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.CodeAnalysis.Compilers" Version="5.8.0-1.26274.20">
+    <Dependency Name="Microsoft.CodeAnalysis.Compilers" Version="5.9.0-1.26279.9">
       <Uri>https://github.com/dotnet/roslyn</Uri>
-      <Sha>560c1cca10d974ff096cb051d45c1330420e8e6a</Sha>
+      <Sha>ae3b522d4e196ac214b3e38ae77e7ec2b31806dd</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.VisualStudio.LanguageServices" Version="5.8.0-1.26274.20">
+    <Dependency Name="Microsoft.VisualStudio.LanguageServices" Version="5.9.0-1.26279.9">
       <Uri>https://github.com/dotnet/roslyn</Uri>
-      <Sha>560c1cca10d974ff096cb051d45c1330420e8e6a</Sha>
+      <Sha>ae3b522d4e196ac214b3e38ae77e7ec2b31806dd</Sha>
     </Dependency>
     <!-- Necessary for source-build. This allows the live version of the package to be used by source-build. -->
     <Dependency Name="System.Collections.Immutable" Version="10.0.2">