diff --git a/lang/csharp/versions.props b/lang/csharp/versions.props
index 9e97f19fb48..fee8e7c2cb5 100644
--- a/lang/csharp/versions.props
+++ b/lang/csharp/versions.props
@@ -64,7 +64,7 @@
     <MicrosoftBuildFrameworkVersion>18.8.2</MicrosoftBuildFrameworkVersion>
     <MicrosoftBuildUtilitiesCoreVersion>18.8.2</MicrosoftBuildUtilitiesCoreVersion>
     <MicrosoftCodeAnalysisVersion>4.7.0</MicrosoftCodeAnalysisVersion>
-    <MicrosoftCodeAnalysisCSharpVersion>4.7.0</MicrosoftCodeAnalysisCSharpVersion>
+    <MicrosoftCodeAnalysisCSharpVersion>5.9.0</MicrosoftCodeAnalysisCSharpVersion>
     <MicrosoftCodeAnalysisCSharpCodeStyleVersion>4.7.0</MicrosoftCodeAnalysisCSharpCodeStyleVersion>
     <MicrosoftCodeAnalysisNetAnalyzersVersion>10.0.101</MicrosoftCodeAnalysisNetAnalyzersVersion>
     <MicrosoftNETTestSdkVersion>17.13.0</MicrosoftNETTestSdkVersion>