diff --git a/package.json b/package.json
index f8fd21c..030ea40 100644
--- a/package.json
+++ b/package.json
@@ -24,12 +24,12 @@
     "test": "mocha"
   },
   "dependencies": {
-    "is-descriptor": "^1.0.2",
+    "is-descriptor": "^3.0.0",
     "isobject": "^3.0.1"
   },
   "devDependencies": {
     "gulp-format-md": "^1.0.0",
-    "mocha": "^3.5.3"
+    "mocha": "^7.1.0"
   },
   "keywords": [
     "define",
diff --git a/test.js b/test.js
index 6ade2db..acb226d 100644
--- a/test.js
+++ b/test.js
@@ -29,6 +29,7 @@ describe('define', function() {
     var obj = {bar: 'baz'};
     define(obj, 'foo', {
       configurable: true,
+      enumerable: false,
       get: function() {
         return this._val;
       },
@@ -45,6 +46,7 @@ describe('define', function() {
     fixture.bar = 'baz';
     define(fixture, 'foo', {
       configurable: true,
+      enumerable: false,
       set: function(key) {
         define(this, '_val', this[key]);
       },
@@ -61,6 +63,7 @@ describe('define', function() {
     fixture.bar = 'baz';
     define(fixture, 'foo', {
       configurable: true,
+      enumerable: false,
       set: function(key) {
         define(this, '_val', this[key]);
       },
@@ -77,6 +80,7 @@ describe('define', function() {
     fixture.bar = 'baz';
     define(fixture, 'foo', {
       configurable: true,
+      enumerable: false,
       set: function(key) {
         define(this, '_val', this[key]);
       },
@@ -91,6 +95,8 @@ describe('define', function() {
   it('should define a property with data descriptors:', function() {
     var obj = {};
     define(obj, 'foo', {
+      configurable: false,
+      enumerable: false,
       writable: true,
       value: 'bar'
     });