diff --git a/Directory.Build.props b/Directory.Build.props
index b2bb624..0c15501 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -20,6 +20,7 @@
 
   <ItemGroup>
     <PackageReference Include="Temporalio" Version="0.1.0-beta2" />
+    <PackageReference Include="Temporalio.Extensions.DiagnosticSource" Version="0.1.0-beta2" />
     <PackageReference Include="Temporalio.Extensions.Hosting" Version="0.1.0-beta2" />
     <PackageReference Include="Temporalio.Extensions.OpenTelemetry" Version="0.1.0-beta2" />
     <!--