diff --git a/web/ui/templates/_base.html b/web/ui/templates/_base.html
index 0ae6c95fd..7f41c852a 100644
--- a/web/ui/templates/_base.html
+++ b/web/ui/templates/_base.html
@@ -2,6 +2,7 @@
 <html lang="en">
   <head>
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
+    <meta name="robots" content="noindex,nofollow">
     <title>Prometheus Time Series Collection and Processing Server</title>
     <link rel="shortcut icon" href="{{ pathPrefix }}/static/img/favicon.ico?v={{ buildVersion }}">
     <script src="{{ pathPrefix }}/static/vendor/js/jquery.min.js?v={{ buildVersion }}"></script>
