diff --git a/src/_css/main.css b/src/_css/main.css
index e559acfb..84e63a27 100644
--- a/src/_css/main.css
+++ b/src/_css/main.css
@@ -631,3 +631,7 @@ pre mark .token.punctuation {
 .highlight-line {
   display: inline-block;
 }
+
+.deprecated {
+  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' height='9em' width='16em' viewBox='0 0 16 9'><text transform='translate(4.77 8.58) rotate(-45)' font-size='2' font-weight='bold' fill='LightSalmon'>Deprecated</text></svg>");
+}
diff --git a/src/_includes/layouts/post.njk b/src/_includes/layouts/post.njk
index a570a84a..ede75170 100644
--- a/src/_includes/layouts/post.njk
+++ b/src/_includes/layouts/post.njk
@@ -1,7 +1,7 @@
 ---
 layout: layouts/base.njk
 ---
-<article itemscope itemtype="http://schema.org/BlogPosting">
+<article itemscope itemtype="http://schema.org/BlogPosting" class="{{ 'deprecated' if deprecated }}">
   <header>
     <h1 itemprop="headline">{{ title | markdown | safe }}</h1>
     <p class="meta">
diff --git a/src/blog/test-the-future.md b/src/blog/test-the-future.md
index 62af4f4f..3b0d084d 100644
--- a/src/blog/test-the-future.md
+++ b/src/blog/test-the-future.md
@@ -2,6 +2,8 @@
 title: 'Help us test the future of V8!'
 author: 'Daniel Clifford ([@expatdanno](https://twitter.com/expatdanno)), Original Munich V8 Brewer'
 date: 2017-02-14 13:33:37
+updated: 2024-01-14 10:52:14
+deprecated: true
 tags:
   - internals
 description: 'Preview V8’s new compiler pipeline with Ignition and TurboFan in Chrome Canary today!'