diff --git a/source/_layouts/base.html.twig b/source/_layouts/base.html.twig
index ebfd59b2..3828b979 100644
--- a/source/_layouts/base.html.twig
+++ b/source/_layouts/base.html.twig
@@ -5,6 +5,10 @@
 <!--[if !IE]><!--> <html> <!--<![endif]-->
   {% include 'head' %}
   <body class="{% block body_classes %}{% endblock %}">
+    <!--[if lt IE 7]>
+        <p class="browsehappy">You are using an <strong>outdated</strong> browser. Please <a href="http://browsehappy.com/">upgrade your browser</a> to improve your experience.</p>
+    <![endif]-->
+
     {% include 'navbar' %}
 
     <div class="container">
