diff --git a/eng/Versions.props b/eng/Versions.props
index 9ae72287066..978d3a9fc0f 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -75,7 +75,7 @@
       <!-- https://pkgs.dev.azure.com/azure-public/vside/_packaging/vs-buildservices/nuget/v3/index.json; --></RestoreSources>
     <!-- System.* packages -->
     <SystemBuffersVersion>4.5.1</SystemBuffersVersion>
-    <SystemCollectionsImmutableVersion>5.0.0-preview.8.20407.11</SystemCollectionsImmutableVersion>
+    <SystemCollectionsImmutableVersion>5.0.0</SystemCollectionsImmutableVersion>
     <SystemConsoleVersion>4.3.0</SystemConsoleVersion>
     <SystemDataSqlClientPackageVersion>4.3.0</SystemDataSqlClientPackageVersion>
     <SystemDesignVersion>4.0.0</SystemDesignVersion>
@@ -88,7 +88,7 @@
     <SystemNetRequestsVersion>4.3.0</SystemNetRequestsVersion>
     <SystemNetSecurityVersion>4.3.0</SystemNetSecurityVersion>
     <SystemReflectionEmitVersion>4.3.0</SystemReflectionEmitVersion>
-    <SystemReflectionMetadataVersion>5.0.0-preview.8.20407.11</SystemReflectionMetadataVersion>
+    <SystemReflectionMetadataVersion>5.0.0</SystemReflectionMetadataVersion>
     <SystemReflectionTypeExtensionsVersion>4.3.0</SystemReflectionTypeExtensionsVersion>
     <SystemRuntimeCachingVersion>1.5.0</SystemRuntimeCachingVersion>
     <SystemRuntimeVersion>4.3.0</SystemRuntimeVersion>
@@ -104,7 +104,7 @@
     <SystemThreadingThreadPoolVersion>4.3.0</SystemThreadingThreadPoolVersion>
     <SystemValueTupleVersion>4.5.0</SystemValueTupleVersion>
     <!-- Roslyn packages -->
-    <RoslynVersion>3.9.0-1.20512.2</RoslynVersion>
+    <RoslynVersion>3.8.0-5.20570.14</RoslynVersion>
     <MicrosoftCodeAnalysisEditorFeaturesVersion>$(RoslynVersion)</MicrosoftCodeAnalysisEditorFeaturesVersion>
     <MicrosoftCodeAnalysisEditorFeaturesTextVersion>$(RoslynVersion)</MicrosoftCodeAnalysisEditorFeaturesTextVersion>
     <MicrosoftCodeAnalysisEditorFeaturesWpfVersion>$(RoslynVersion)</MicrosoftCodeAnalysisEditorFeaturesWpfVersion>
@@ -169,9 +169,9 @@
     <MicrosoftVisualStudioShellImmutable150Version>15.0.25123-Dev15Preview</MicrosoftVisualStudioShellImmutable150Version>
     <MicrosoftVisualStudioShellInterop160DesignTimeVersion>16.0.1</MicrosoftVisualStudioShellInterop160DesignTimeVersion>
     <MicrosoftVisualStudioShellInterop16DesignTimeVersion>16.0.28924.11111</MicrosoftVisualStudioShellInterop16DesignTimeVersion>
-    <MicrosoftVisualStudioThreadingVersion>16.8.7-alpha</MicrosoftVisualStudioThreadingVersion>
+    <MicrosoftVisualStudioThreadingVersion>16.8.55</MicrosoftVisualStudioThreadingVersion>
     <MicrosoftVisualStudioUtilitiesVersion>16.7.30329.38</MicrosoftVisualStudioUtilitiesVersion>
-    <MicrosoftVisualStudioValidationVersion>16.8.2-alpha</MicrosoftVisualStudioValidationVersion>
+    <MicrosoftVisualStudioValidationVersion>16.8.33</MicrosoftVisualStudioValidationVersion>
     <MicrosoftVisualStudioWCFReferenceInteropVersion>9.0.30729</MicrosoftVisualStudioWCFReferenceInteropVersion>
     <MicrosoftVSSDKBuildToolsVersion>16.5.2044</MicrosoftVSSDKBuildToolsVersion>
     <VSSDKDebuggerVisualizersVersion>12.0.4</VSSDKDebuggerVisualizersVersion>