diff --git a/.changeset/witty-needles-serve.md b/.changeset/witty-needles-serve.md
new file mode 100644
index 0000000..d273ab4
--- /dev/null
+++ b/.changeset/witty-needles-serve.md
@@ -0,0 +1,5 @@
+---
+"eleventy-plugin-shiki-twoslash": patch
+---
+
+Ditch deasync in 11ty plugin
diff --git a/packages/eleventy-plugin-shiki-twoslash/index.js b/packages/eleventy-plugin-shiki-twoslash/index.js
index 38fd427..8ed022f 100644
--- a/packages/eleventy-plugin-shiki-twoslash/index.js
+++ b/packages/eleventy-plugin-shiki-twoslash/index.js
@@ -1,30 +1,22 @@
 // @ts-check
 const { setupForFile, transformAttributesToHTML } = require("remark-shiki-twoslash")
-const { sleep } = require("deasync")
 
 /**
  * @param {*} eleventyConfig
  * @param {import("shiki-twoslash").UserConfigSettings} options
  */
+
+let highlighters = undefined
+
 module.exports = function (eleventyConfig, options = {}) {
   /** @type {import("shiki").Highlighter[]} */
-  let highlighters = undefined
-  setupForFile(options).then(h => (highlighters = h.highlighters))
-
-  if (!highlighters) {
-    let count = 10000 / 200
-    while (!highlighters) {
-      sleep(200)
-      count -= 1
-      if (count <= 0)
-        throw new Error(
-          "Could not get Shiki loaded async via 'deasync'. 11ty doesn't have an API for async plugins, and Shiki needs this for the WASM syntax highlighter. You can try using a different version of node, or requesting APIs at https://github.com/11ty/eleventy"
-        )
-    }
-  }
+  eleventyConfig.on("eleventy.before", async () => {
+    const h = await setupForFile(options)
+    highlighters = await h.highlighters;
+  });
 
   eleventyConfig.addMarkdownHighlighter((code, lang, fence) => {
     code = code.replace(/\r?\n$/, "") // strip trailing newline fed during code block parsing
     return transformAttributesToHTML(code, [lang, fence].join(" "), highlighters, options)
   })
-}
+}
\ No newline at end of file
diff --git a/packages/eleventy-plugin-shiki-twoslash/package.json b/packages/eleventy-plugin-shiki-twoslash/package.json
index 817d7ca..ec48985 100644
--- a/packages/eleventy-plugin-shiki-twoslash/package.json
+++ b/packages/eleventy-plugin-shiki-twoslash/package.json
@@ -20,7 +20,6 @@
     "build": "pnpm exec tsc index.js --declaration --allowJs --emitDeclarationOnly --target es2018 -moduleResolution node"
   },
   "dependencies": {
-    "deasync": "^0.1.21",
     "remark-shiki-twoslash": "3.1.7",
     "typescript": ">3",
     "@typescript/vfs": "1.4.0",