diff --git a/partials/post-background.hbs b/partials/post-background.hbs
index b7d0cec..c358849 100644
--- a/partials/post-background.hbs
+++ b/partials/post-background.hbs
@@ -15,7 +15,7 @@ with a `no-image` class so we can style it accordingly.
 
 <style type="text/css">
     .responsive-{{slug}}-img {
-        background-image: url({{img_url feature_image size='s'}});
+        background-image: url({{img_url feature_image size='m'}});
     }
 </style>
 <div class="post-background responsive-{{slug}}-img bg-cover bg-center bg-yuika-blue-500">