diff --git a/HISTORY.md b/HISTORY.md
index 3043cd1..f04ec61 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,6 +1,7 @@
 unreleased
-=================
+==================
 
+* Remove `Object.setPrototypeOf` polyfill
 * Use `Array.flat` instead of `array-flatten` package
 
 2.0.0 / 2024-09-09
diff --git a/index.js b/index.js
index fac31f1..b806282 100644
--- a/index.js
+++ b/index.js
@@ -18,7 +18,6 @@ const methods = require('methods')
 const mixin = require('utils-merge')
 const parseUrl = require('parseurl')
 const Route = require('./lib/route')
-const setPrototypeOf = require('setprototypeof')
 
 /**
  * Module variables.
@@ -60,7 +59,7 @@ function Router (options) {
   }
 
   // inherit from the correct prototype
-  setPrototypeOf(router, this)
+  Object.setPrototypeOf(router, this)
 
   router.caseSensitive = opts.caseSensitive
   router.mergeParams = opts.mergeParams
diff --git a/package.json b/package.json
index 153e133..de23500 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,6 @@
     "methods": "~1.1.2",
     "parseurl": "~1.3.3",
     "path-to-regexp": "^8.0.0",
-    "setprototypeof": "1.2.0",
     "utils-merge": "1.0.1"
   },
   "devDependencies": {