diff --git a/implementation.js b/implementation.js
index 4eb3518..db5252d 100644
--- a/implementation.js
+++ b/implementation.js
@@ -5,7 +5,7 @@ var IsDetachedBuffer = require('es-abstract/2024/IsDetachedBuffer');
 var setFunctionName = require('set-function-name');
 var isSharedArrayBuffer = require('is-shared-array-buffer');
 
-var $TypeError = TypeError;
+var $TypeError = require('es-errors/type');
 
 module.exports = setFunctionName(function detached() {
 	var O = this; // step 1
diff --git a/package.json b/package.json
index c54336b..55ee446 100644
--- a/package.json
+++ b/package.json
@@ -40,7 +40,10 @@
 		"call-bind": "^1.0.8",
 		"define-properties": "^1.2.1",
 		"es-abstract": "^1.23.9",
+		"es-errors": "^1.3.0",
+		"get-proto": "^1.0.0",
 		"gopd": "^1.2.0",
+		"has-property-descriptors": "^1.0.2",
 		"is-shared-array-buffer": "^1.0.4",
 		"set-function-name": "^2.0.2"
 	},
diff --git a/polyfill.js b/polyfill.js
index e01237c..bce3b89 100644
--- a/polyfill.js
+++ b/polyfill.js
@@ -2,7 +2,7 @@
 
 var implementation = require('./implementation');
 
-var supportsDescriptors = require('define-properties').supportsDescriptors;
+var supportsDescriptors = require('has-property-descriptors')();
 var gOPD = require('gopd');
 
 module.exports = function getPolyfill() {
diff --git a/shim.js b/shim.js
index c138a1d..3b2896a 100644
--- a/shim.js
+++ b/shim.js
@@ -1,13 +1,13 @@
 'use strict';
 
-var supportsDescriptors = require('define-properties').supportsDescriptors;
+var supportsDescriptors = require('has-property-descriptors')();
 var gOPD = require('gopd');
 
 var getPolyfill = require('./polyfill');
 var defineProperty = Object.defineProperty;
-var $TypeError = TypeError;
-var $SyntaxError = SyntaxError;
-var getProto = Object.getPrototypeOf;
+var $TypeError = require('es-errors/type');
+var $SyntaxError = require('es-errors/syntax');
+var getProto = require('get-proto');
 
 module.exports = function shimDetached() {
 	if (!supportsDescriptors || !getProto) {
diff --git a/test/shimmed.js b/test/shimmed.js
index eb1619f..8b55e01 100644
--- a/test/shimmed.js
+++ b/test/shimmed.js
@@ -3,8 +3,8 @@
 require('../auto');
 
 var test = require('tape');
-var defineProperties = require('define-properties');
 var callBind = require('call-bind');
+var supportsDescriptors = require('has-property-descriptors')();
 
 var isEnumerable = Object.prototype.propertyIsEnumerable;
 var functionsHaveNames = require('functions-have-names')();
@@ -24,7 +24,7 @@ test('shimmed', function (t) {
 			s2t.end();
 		});
 
-		st.test('enumerability', { skip: !defineProperties.supportsDescriptors }, function (et) {
+		st.test('enumerability', { skip: !supportsDescriptors }, function (et) {
 			et.equal(false, isEnumerable.call(ArrayBuffer.prototype, 'detached'), 'ArrayBuffer#detached is not enumerable');
 			et.end();
 		});