diff --git a/app/config/sculpin_site.yml b/app/config/sculpin_site.yml
index 6f156690..0849fa0c 100644
--- a/app/config/sculpin_site.yml
+++ b/app/config/sculpin_site.yml
@@ -55,6 +55,7 @@ digitalocean_referral: a913b4b00d4a
 default_date_format: jS F, Y
 title_separator: "|"
 html_lang: en-GB
+bootswatch: lumen
 
 availability:
     status:
diff --git a/source/themes/opdavies/oliverdavies/_layouts/default.html.twig b/source/themes/opdavies/oliverdavies/_layouts/default.html.twig
index be92bfa3..4cfd3fc1 100644
--- a/source/themes/opdavies/oliverdavies/_layouts/default.html.twig
+++ b/source/themes/opdavies/oliverdavies/_layouts/default.html.twig
@@ -18,6 +18,7 @@
         <meta http-equiv="X-UA-Compatible" content="IE=edge">
         <meta name="viewport" content="width=device-width, initial-scale=1">
         <link rel="stylesheet" href="{{ site.url }}/{{ theme_path('css/styles.css') }}">
+        <link rel="stylesheet" href="{{ site.url }}/components/bootswatch/{{ site.bootswatch }}/bootstrap.min.css">
         <link rel="stylesheet" href="{{ site.url }}/components/highlightjs/styles/{{ site.hightlightjs_style }}.css">
 
         {% for size in site.apple_touch_icon_sizes %}