diff --git a/package.json b/package.json
index f9c204d..4fc81ba 100644
--- a/package.json
+++ b/package.json
@@ -25,6 +25,7 @@
     "markdown-it-deflist": "^3.0.0",
     "markdown-it-emoji": "^3.0.0",
     "markdown-it-footnote": "^4.0.0",
+    "markdown-it-front-matter": "^0.2.4",
     "markdown-it-github-alerts": "^0.3.0",
     "markdown-it-inject-linenumbers": "^0.3.0",
     "markdown-it-mark": "^4.0.0",
diff --git a/src/parser/markdown.ts b/src/parser/markdown.ts
index 20eaafc..4783bc7 100644
--- a/src/parser/markdown.ts
+++ b/src/parser/markdown.ts
@@ -1,5 +1,6 @@
 import MarkdownIt from 'markdown-it';
 import anchor from 'markdown-it-anchor';
+import frontMatter from 'markdown-it-front-matter';
 import highlight from './highlight.js';
 import graphviz from './dot.js';
 import mermaid from './mermaid.js';
@@ -59,6 +60,9 @@ mdit.use(toc, config.tocOptions);
 
 // MARK: untyped plugins done
 
+// markdown-it-front-matter requires a callback function but we aren’t doing
+// anything with it, so we just pass in a noop.
+mdit.use(frontMatter, () => {});
 // anchor has to be added after attribute plugin for ids to work
 mdit.use(anchor, {
     permalink: anchor.permalink.ariaHidden({
diff --git a/yarn.lock b/yarn.lock
index 59ef252..bb34144 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2190,6 +2190,11 @@ markdown-it-footnote@^4.0.0:
   resolved "https://registry.yarnpkg.com/markdown-it-footnote/-/markdown-it-footnote-4.0.0.tgz#02ede0cb68a42d7e7774c3abdc72d77aaa24c531"
   integrity sha512-WYJ7urf+khJYl3DqofQpYfEYkZKbmXmwxQV8c8mO/hGIhgZ1wOe7R4HLFNwqx7TjILbnC98fuyeSsin19JdFcQ==
 
+markdown-it-front-matter@^0.2.4:
+  version "0.2.4"
+  resolved "https://registry.yarnpkg.com/markdown-it-front-matter/-/markdown-it-front-matter-0.2.4.tgz#cf29bc8222149b53575699357b1ece697bf39507"
+  integrity sha512-25GUs0yjS2hLl8zAemVndeEzThB1p42yxuDEKbd4JlL3jiz+jsm6e56Ya8B0VREOkNxLYB4TTwaoPJ3ElMmW+w==
+
 markdown-it-github-alerts@^0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/markdown-it-github-alerts/-/markdown-it-github-alerts-0.3.0.tgz#acab7db57f4e204c8d1c987403c367738d7026b0"