diff --git a/Part 4 - Azure OpenAI/GenAiLab/GenAiLab.ServiceDefaults/GenAiLab.ServiceDefaults.csproj b/Part 4 - Azure OpenAI/GenAiLab/GenAiLab.ServiceDefaults/GenAiLab.ServiceDefaults.csproj
index 6361eab..ab10f27 100644
--- a/Part 4 - Azure OpenAI/GenAiLab/GenAiLab.ServiceDefaults/GenAiLab.ServiceDefaults.csproj	
+++ b/Part 4 - Azure OpenAI/GenAiLab/GenAiLab.ServiceDefaults/GenAiLab.ServiceDefaults.csproj	
@@ -12,7 +12,7 @@
 
     <PackageReference Include="Microsoft.Extensions.Http.Resilience" Version="9.9.0" />
     <PackageReference Include="Microsoft.Extensions.ServiceDiscovery" Version="9.3.1" />
-    <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.12.0" />
+    <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.15.3" />
     <PackageReference Include="OpenTelemetry.Extensions.Hosting" Version="1.12.0" />
     <PackageReference Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.12.0" />
     <PackageReference Include="OpenTelemetry.Instrumentation.Http" Version="1.12.0" />
diff --git a/Part 5 - Products Page/GenAiLab/GenAiLab.ServiceDefaults/GenAiLab.ServiceDefaults.csproj b/Part 5 - Products Page/GenAiLab/GenAiLab.ServiceDefaults/GenAiLab.ServiceDefaults.csproj
index 6361eab..ab10f27 100644
--- a/Part 5 - Products Page/GenAiLab/GenAiLab.ServiceDefaults/GenAiLab.ServiceDefaults.csproj	
+++ b/Part 5 - Products Page/GenAiLab/GenAiLab.ServiceDefaults/GenAiLab.ServiceDefaults.csproj	
@@ -12,7 +12,7 @@
 
     <PackageReference Include="Microsoft.Extensions.Http.Resilience" Version="9.9.0" />
     <PackageReference Include="Microsoft.Extensions.ServiceDiscovery" Version="9.3.1" />
-    <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.12.0" />
+    <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.15.3" />
     <PackageReference Include="OpenTelemetry.Extensions.Hosting" Version="1.12.0" />
     <PackageReference Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.12.0" />
     <PackageReference Include="OpenTelemetry.Instrumentation.Http" Version="1.12.0" />
diff --git a/Part 6 - Deployment/GenAiLab/GenAiLab.ServiceDefaults/GenAiLab.ServiceDefaults.csproj b/Part 6 - Deployment/GenAiLab/GenAiLab.ServiceDefaults/GenAiLab.ServiceDefaults.csproj
index be1ddc4..50846d8 100644
--- a/Part 6 - Deployment/GenAiLab/GenAiLab.ServiceDefaults/GenAiLab.ServiceDefaults.csproj	
+++ b/Part 6 - Deployment/GenAiLab/GenAiLab.ServiceDefaults/GenAiLab.ServiceDefaults.csproj	
@@ -12,7 +12,7 @@
 
     <PackageReference Include="Microsoft.Extensions.Http.Resilience" Version="10.3.0" />
     <PackageReference Include="Microsoft.Extensions.ServiceDiscovery" Version="10.3.0" />
-    <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.15.0" />
+    <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.15.3" />
     <PackageReference Include="OpenTelemetry.Extensions.Hosting" Version="1.15.0" />
     <PackageReference Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.15.0" />
     <PackageReference Include="OpenTelemetry.Instrumentation.Http" Version="1.15.0" />