diff --git a/www/src/pages/blog/demo-day-2021-09.astro b/www/src/pages/blog/demo-day-2021-09.astro
index 48a378f98..56c7a979a 100644
--- a/www/src/pages/blog/demo-day-2021-09.astro
+++ b/www/src/pages/blog/demo-day-2021-09.astro
@@ -13,7 +13,7 @@ let lang = 'en';
 
 <html lang={ lang ?? 'en' }>
   <head>
-    <BaseHead title={title} description={description} canonicalURL={permalink} image="/assets/blog/demo-day-2021-09/social.png" />
+    <BaseHead title={title} description={description} canonicalURL={permalink} image="https://astro.build/assets/blog/demo-day-2021-09/social.png" />
     <link rel="stylesheet" href={Astro.resolve('../../scss/blog.css')} />
     <style>
       .chat-messages {
