diff --git a/tsstats/templates/index.jinja2 b/tsstats/templates/index.jinja2
index 24e21bd..1ffff85 100644
--- a/tsstats/templates/index.jinja2
+++ b/tsstats/templates/index.jinja2
@@ -3,7 +3,7 @@
 <head>
   <title>{{ title }}</title>
   <meta charset="utf-8">
-  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.1.3/dist/css/bootstrap.min.css" integrity="sha256-eSi1q2PG6J7g7ib17yAaWMcrr5GrtohYChqibrV7PBE=" crossorigin="anonymous">
+  <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
   <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/hint.css@2.5.1/hint.base.min.css" integrity="sha256-4jZ5pY2g6hxKp7vYRKAxu+AI9Ph/cUMiOCGp1yOTDrg=" crossorigin="anonymous">
   <meta name="referrer" content="no-referrer">
   <meta name="viewport" content="width=device-width, initial-scale=1">
