diff --git a/hosts/radiobert/readsb.nix b/hosts/radiobert/readsb.nix
index e61f132c..33cc4747 100644
--- a/hosts/radiobert/readsb.nix
+++ b/hosts/radiobert/readsb.nix
@@ -86,7 +86,13 @@ in {
     };
     path = with pkgs; [ curl gzip ];
     script = ''
-      while curl -s http://localhost:8080/data.json \
+      while (
+        echo '{"now":'
+        date +%s
+        echo ',"aircraft":'
+        curl -s http://localhost:8080/data.json
+        echo '}'
+      ) \
           | gzip -c \
           | curl -s \
             -u "$(cat ${config.sops.secrets."chaos-consulting/user".path})" \