diff --git a/09.Cases/GHModel.AI/GHModel.dotNET.AI/GHModel.dotNET.AI.Workflow.OpenTelemetry/GHModel.dotNET.AI.Workflow.OpenTelemetry.csproj b/09.Cases/GHModel.AI/GHModel.dotNET.AI/GHModel.dotNET.AI.Workflow.OpenTelemetry/GHModel.dotNET.AI.Workflow.OpenTelemetry.csproj
index 584f739..758b704 100644
--- a/09.Cases/GHModel.AI/GHModel.dotNET.AI/GHModel.dotNET.AI.Workflow.OpenTelemetry/GHModel.dotNET.AI.Workflow.OpenTelemetry.csproj
+++ b/09.Cases/GHModel.AI/GHModel.dotNET.AI/GHModel.dotNET.AI.Workflow.OpenTelemetry/GHModel.dotNET.AI.Workflow.OpenTelemetry.csproj
@@ -15,9 +15,9 @@
     <PackageReference Include="Microsoft.Extensions.Logging" Version="10.0.0" />
     <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="10.0.0" />
     <PackageReference Include="OpenAI" Version="2.8.0" />
-    <PackageReference Include="OpenTelemetry" Version="1.13.1" />
+    <PackageReference Include="OpenTelemetry" Version="1.15.3" />
     <PackageReference Include="OpenTelemetry.Exporter.Console" Version="1.13.1" />
-    <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.13.1" />
+    <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.15.3" />
     <PackageReference Include="OpenTelemetry.Instrumentation.Http" Version="1.13.0" />
     <PackageReference Include="OpenTelemetry.Instrumentation.Runtime" Version="1.13.0" />
     <PackageReference Include="OpenTelemetry.Extensions.Hosting" Version="1.13.1" />