diff --git a/proto/gnpsi/gnpsi.proto b/proto/gnpsi/gnpsi.proto
index b8f3753..7d89108 100644
--- a/proto/gnpsi/gnpsi.proto
+++ b/proto/gnpsi/gnpsi.proto
@@ -30,6 +30,7 @@ service gNPSI {
   // updates from the device.  Past updates, i.e., updates before the
   // subscription is received, will not be presented to the subscribing client.
   rpc Subscribe(Request) returns (stream Sample);
+  rpc SubscribeBatch(Request) returns (stream Samples);
 }
 
 message SFlowMetadata {
@@ -86,3 +87,7 @@ message Sample {
   NetFlowMetadata netflow_metadata = 102;
   IPFIXMetadata ipfix_metadata = 103;
 }
+
+message Samples {
+  repeated Sample samples = 1;
+}
\ No newline at end of file