diff --git a/challenge-4/agent-workflow/dotnetworkflow/FactoryWorkflow.csproj b/challenge-4/agent-workflow/dotnetworkflow/FactoryWorkflow.csproj
index 50fccc0..75ea092 100644
--- a/challenge-4/agent-workflow/dotnetworkflow/FactoryWorkflow.csproj
+++ b/challenge-4/agent-workflow/dotnetworkflow/FactoryWorkflow.csproj
@@ -28,7 +28,7 @@
         <PackageReference Include="Serilog.Sinks.Console" Version="6.0.0" />
         <PackageReference Include="Serilog.Sinks.OpenTelemetry" Version="4.2.0" />
         <PackageReference Include="Spectre.Console" Version="0.52.0" />
-        <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.13.1" />
+        <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.15.2" />
       <PackageReference Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.13.0" />
         <PackageReference Include="OpenTelemetry.Instrumentation.Http" Version="1.13.0" />
         <PackageReference Include="Azure.Monitor.OpenTelemetry.Exporter" Version="1.4.0" />