diff --git a/news/feature-412.md b/news/feature-412.md
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+grpc: Added service account option for grpc destinations.
+
+Example usage:
+```
+destination {
+    google-pubsub-grpc(
+        project("test")
+        topic("test")
+        auth(service-account(key ("path_to_service_account_key.json")))
+    );
+};
+```
+
+Note: It seems like gRPC sets the audience and scope options
+based on the gRPC service name.