diff --git a/alchemy/templates/base.html b/alchemy/templates/base.html
index a182f61..6d05c87 100644
--- a/alchemy/templates/base.html
+++ b/alchemy/templates/base.html
@@ -6,6 +6,7 @@
     <meta charset="utf-8">
     <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
     <meta name="viewport" content="width=device-width, initial-scale=1">
+    <link rel="canonical" href="{{ SITEURL }}/{{ output_file }}" />
 
     <title>{% block title %}{{ SITE_SUBTEXT }}{% endblock title %}</title>