diff --git a/404.html b/404.html
index 4bf3f7d8..201310e6 100644
--- a/404.html
+++ b/404.html
@@ -2,6 +2,7 @@
 layout: default
 title: "404: Page not found"
 permalink: 404.html
+sitemap: false
 ---
 
 <div class="page">
diff --git a/_config.yml b/_config.yml
index 8bff9f76..6b31efbe 100644
--- a/_config.yml
+++ b/_config.yml
@@ -42,3 +42,4 @@ contact: '/contact.html'
 
 gems:
   - jekyll-redirect-from
+  - jekyll-sitemap