diff --git a/astro.config.mjs b/astro.config.mjs
index 74fec83329..817d05e93f 100644
--- a/astro.config.mjs
+++ b/astro.config.mjs
@@ -1,5 +1,6 @@
 // @ts-check
 import { defineConfig } from 'astro/config';
+import { unified } from '@astrojs/markdown-remark';
 import mdx from '@astrojs/mdx';
 import sitemap from '@astrojs/sitemap';
 import icon from 'astro-icon';
@@ -28,17 +29,19 @@ export default defineConfig({
     // Link localization (Markdown links + raw HTML/JSX `<a href>`). Configuration —
     // localized sections, versioned sections, default version, and the "global" pages
     // exception — lives in the plugin defaults; no options needed here.
-    remarkPlugins: [remarkRewriteLocalizedLinks, remarkCodeTabs],
-    rehypePlugins: [
-      rehypeRewriteLocalizedLinks,
-      rehypeSlug,
-      [
-        rehypeAutolinkHeadings,
-        {
-          behavior: 'wrap',
-        },
+    processor: unified({
+      remarkPlugins: [remarkRewriteLocalizedLinks, remarkCodeTabs],
+      rehypePlugins: [
+        rehypeRewriteLocalizedLinks,
+        rehypeSlug,
+        [
+          rehypeAutolinkHeadings,
+          {
+            behavior: 'wrap',
+          },
+        ],
       ],
-    ],
+    }),
   },
   vite: {
     plugins: [
diff --git a/package-lock.json b/package-lock.json
index dfcad77fba..4b124677d1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -8,6 +8,7 @@
       "name": "expressjs-website",
       "license": "CC-BY-SA-4.0",
       "dependencies": {
+        "@astrojs/markdown-remark": "^7.2.0",
         "@astrojs/mdx": "^6.0.1",
         "@astrojs/react": "^5.0.6",
         "@astrojs/rss": "^4.0.18",
diff --git a/package.json b/package.json
index faff5824d5..9db8d5cea3 100644
--- a/package.json
+++ b/package.json
@@ -29,6 +29,7 @@
     "test:e2e": "playwright test"
   },
   "dependencies": {
+    "@astrojs/markdown-remark": "^7.2.0",
     "@astrojs/mdx": "^6.0.1",
     "@astrojs/react": "^5.0.6",
     "@astrojs/rss": "^4.0.18",