diff --git a/src/script/hydra-send-stats b/src/script/hydra-send-stats
index d014bfe9..600405c5 100755
--- a/src/script/hydra-send-stats
+++ b/src/script/hydra-send-stats
@@ -48,6 +48,9 @@ sub sendQueueRunnerStats {
 
     gauge("hydra.queue.bytes_sent", $json->{bytesSent});
     gauge("hydra.queue.bytes_received", $json->{bytesReceived});
+
+    gauge("hydra.queue.machines.total", scalar(keys %{$json->{machines}}));
+    gauge("hydra.queue.machines.in_use", scalar(grep { $_->{currentJobs} > 0 } (values %{$json->{machines}})));
 }
 
 while (1) {