diff --git a/bun.lockb b/bun.lockb
index a66eae4d..066bbf90 100644
Binary files a/bun.lockb and b/bun.lockb differ
diff --git a/eleventy.config.js b/eleventy.config.js
index 0d987983..1e73f314 100644
--- a/eleventy.config.js
+++ b/eleventy.config.js
@@ -82,6 +82,7 @@ module.exports = function (eleventyConfig) {
         .use(markdownItAnchor, markdownItAnchorOptions)
         .use(require("markdown-it-attrs"))
         .use(require("markdown-it-bracketed-spans"))
+        .use(require("markdown-it-collapsible"))
         .use(require("markdown-it-container"))
         .use(require("markdown-it-deflist"));
 
diff --git a/package.json b/package.json
index ba19fc42..05e436cb 100644
--- a/package.json
+++ b/package.json
@@ -23,6 +23,7 @@
     "markdown-it-anchor": "^8.6.7",
     "markdown-it-attrs": "^4.1.6",
     "markdown-it-bracketed-spans": "^1.0.1",
+    "markdown-it-collapsible": "^2.0.2",
     "markdown-it-container": "^4.0.0",
     "markdown-it-deflist": "^3.0.0",
     "slugify": "^1.6.6"