diff --git a/IPython/html/templates/notebook.html b/IPython/html/templates/notebook.html
index c06648a..b49878b 100644
--- a/IPython/html/templates/notebook.html
+++ b/IPython/html/templates/notebook.html
@@ -11,6 +11,7 @@
 window.mathjax_url = "{{mathjax_url}}";
 </script>
 
+<link rel="stylesheet" href="{{ static_url("components/bootstrap-tour/build/css/bootstrap-tour.min.css") }}" type="text/css" />
 <link rel="stylesheet" href="{{ static_url("components/codemirror/lib/codemirror.css") }}">
 
 {{super()}}