diff --git a/lang/csharp/versions.props b/lang/csharp/versions.props
index 9e97f19fb48..81a7dce6cea 100644
--- a/lang/csharp/versions.props
+++ b/lang/csharp/versions.props
@@ -61,8 +61,8 @@
     <BenchmarkDotNetVersion>0.15.8</BenchmarkDotNetVersion>
     <CoverletCollectorVersion>10.0.1</CoverletCollectorVersion>
     <CoverletMSBuildVersion>10.0.1</CoverletMSBuildVersion>
-    <MicrosoftBuildFrameworkVersion>18.8.2</MicrosoftBuildFrameworkVersion>
-    <MicrosoftBuildUtilitiesCoreVersion>18.8.2</MicrosoftBuildUtilitiesCoreVersion>
+    <MicrosoftBuildFrameworkVersion>18.9.6</MicrosoftBuildFrameworkVersion>
+    <MicrosoftBuildUtilitiesCoreVersion>18.9.6</MicrosoftBuildUtilitiesCoreVersion>
     <MicrosoftCodeAnalysisVersion>4.7.0</MicrosoftCodeAnalysisVersion>
     <MicrosoftCodeAnalysisCSharpVersion>4.7.0</MicrosoftCodeAnalysisCSharpVersion>
     <MicrosoftCodeAnalysisCSharpCodeStyleVersion>4.7.0</MicrosoftCodeAnalysisCSharpCodeStyleVersion>