diff --git a/csharp/Directory.Packages.props b/csharp/Directory.Packages.props
index 3d4ad6cb8c..5126745308 100644
--- a/csharp/Directory.Packages.props
+++ b/csharp/Directory.Packages.props
@@ -42,7 +42,7 @@
     <PackageVersion Include="OpenTelemetry" Version="1.12.0" />
     <PackageVersion Include="OpenTelemetry.Exporter.Console" Version="1.12.0" />
     <PackageVersion Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.15.3" />
-    <PackageVersion Include="System.Diagnostics.DiagnosticSource" Version="9.0.6" />
+    <PackageVersion Include="System.Diagnostics.DiagnosticSource" Version="9.0.18" />
     <PackageVersion Include="System.Net.Http" Version="4.3.4" />
     <PackageVersion Include="System.Net.Http.WinHttpHandler" Version="8.0.2" />
     <PackageVersion Include="System.Text.Json" Version="9.0.9" />