diff --git a/templates/event/menu.html b/templates/event/menu.html
index 28514ea7..bf46f091 100644
--- a/templates/event/menu.html
+++ b/templates/event/menu.html
@@ -1,9 +1,9 @@
 {% load core_tags i18n static %}
 
-<div class="navbar navbar-default" role="navigation">
+<div class="navbar navbar-expand-lg navbar-light bg-white" role="navigation">
   <div class="container">
     <div class="navbar-header">
-      <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
+      <button type="button" class="navbar-toggler" data-bs-toggle="collapse" data-bs-target=".navbar-collapse">
         <span class="sr-only">{% trans "Toggle navigation" %}</span>
         <span class="icon-bar"></span>
         <span class="icon-bar"></span>