diff --git a/index.js b/index.js
index f3add5b..8a47566 100644
--- a/index.js
+++ b/index.js
@@ -13,7 +13,6 @@
  */
 
 var deprecate = require('depd')('http-errors')
-var setPrototypeOf = require('setprototypeof')
 var statuses = require('statuses')
 var inherits = require('inherits')
 var toIdentifier = require('toidentifier')
diff --git a/package.json b/package.json
index 4cb6d7e..8e115c4 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,6 @@
   "dependencies": {
     "depd": "2.0.0",
     "inherits": "2.0.4",
-    "setprototypeof": "1.2.0",
     "statuses": "2.0.1",
     "toidentifier": "1.0.1"
   },