diff --git a/README.md b/README.md
index 383ebe99..d1c1451b 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,7 @@ Built with [Eleventy](https://www.11ty.dev/) and deployed to Neocities with the
 - [Eleventy](https://www.11ty.dev/)
 - Eleventy's official [RSS](https://www.11ty.dev/docs/plugins/rss/) plugin
 - Eleventy's official [Navigation](https://www.11ty.dev/docs/plugins/navigation/) plugin
+- [details-utils](https://www.npmjs.com/package/@zachleat/details-utils)
 
 ### Eleventy Community Plugins
 - [eleventy-plugin-emoji-readtime](https://www.npmjs.com/package/@11tyrocks/eleventy-plugin-emoji-readtime)
diff --git a/bun.lockb b/bun.lockb
index 4eafc6f6..814073b4 100644
Binary files a/bun.lockb and b/bun.lockb differ
diff --git a/eleventy.config.js b/eleventy.config.js
index 445286f8..d877bd46 100644
--- a/eleventy.config.js
+++ b/eleventy.config.js
@@ -8,6 +8,9 @@ module.exports = function (eleventyConfig) {
     // Copy files
     eleventyConfig.addPassthroughCopy("./src/assets/");
     eleventyConfig.addWatchTarget("./src/assets/");
+    eleventyConfig.addPassthroughCopy({
+        "node_modules/@zachleat/details-utils/details-utils.js": "assets/js/details-utils.js",
+    });
 
     // Custom Plugins
     eleventyConfig.addPlugin(require('./eleventy.config.md.js'));
diff --git a/package.json b/package.json
index d32cec0e..cce9b608 100644
--- a/package.json
+++ b/package.json
@@ -16,6 +16,7 @@
     "@11ty/eleventy-navigation": "^0.3.5",
     "@11ty/eleventy-plugin-rss": "^1.2.0",
     "@11tyrocks/eleventy-plugin-emoji-readtime": "^1.0.1",
+    "@zachleat/details-utils": "^2.0.2",
     "eleventy-plugin-embed-everything": "^1.18.2",
     "eleventy-plugin-metagen": "^1.8.3",
     "eleventy-plugin-nesting-toc": "^1.3.0",