diff --git a/client/main.js b/client/main.js
index 6110db32e..3f917a86e 100644
--- a/client/main.js
+++ b/client/main.js
@@ -1,7 +1,7 @@
 /* global io */
 /* eslint-disable no-new */
 
-require('core-js/es5')
+require('core-js/stable')
 var Karma = require('./karma')
 var StatusUpdater = require('./updater')
 var util = require('../common/util')
diff --git a/package.json b/package.json
index 97c050fa1..abba33833 100644
--- a/package.json
+++ b/package.json
@@ -388,7 +388,7 @@
     "chokidar": "^3.0.0",
     "colors": "^1.1.0",
     "connect": "^3.6.0",
-    "core-js": "^2.2.0",
+    "core-js": "^3.1.3",
     "di": "^0.0.1",
     "dom-serialize": "^2.2.0",
     "flatted": "^2.0.0",
diff --git a/test/client/karma.spec.js b/test/client/karma.spec.js
index 1994775e4..a858d0252 100644
--- a/test/client/karma.spec.js
+++ b/test/client/karma.spec.js
@@ -1,5 +1,5 @@
 // shim all the things
-require('core-js/es5')
+require('core-js/stable')
 var sinon = require('sinon')
 var assert = require('assert')
 
diff --git a/yarn.lock b/yarn.lock
index 534c7025a..1ee448bfa 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1388,11 +1388,16 @@ copy-descriptor@^0.1.0:
   resolved "https://registry.yarnpkg.com/copy-descriptor/-/copy-descriptor-0.1.1.tgz#676f6eb3c39997c2ee1ac3a924fd6124748f578d"
   integrity sha1-Z29us8OZl8LuGsOpJP1hJHSPV40=
 
-core-js@^2.2.0, core-js@^2.4.0:
+core-js@^2.4.0:
   version "2.5.3"
   resolved "https://registry.yarnpkg.com/core-js/-/core-js-2.5.3.tgz#8acc38345824f16d8365b7c9b4259168e8ed603e"
   integrity sha1-isw4NFgk8W2DZbfJtCWRaOjtYD4=
 
+core-js@^3.1.3:
+  version "3.1.3"
+  resolved "https://registry.yarnpkg.com/core-js/-/core-js-3.1.3.tgz#95700bca5f248f5f78c0ec63e784eca663ec4138"
+  integrity sha512-PWZ+ZfuaKf178BIAg+CRsljwjIMRV8MY00CbZczkR6Zk5LfkSkjGoaab3+bqRQWVITNZxQB7TFYz+CFcyuamvA==
+
 core-util-is@1.0.2, core-util-is@~1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"