diff --git a/package.json b/package.json
index 7b52617..16387d0 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "url": "https://github.com/dbo/es2015-proxy-shim.git"
   },
   "devDependencies": {
-    "core-js": "^2.2.1",
+    "core-js": "^3.0.0",
     "cz-conventional-changelog": "^2.0.0",
     "eslint": "^4.1.1",
     "mocha": "^4.0.0",