diff --git a/package.json b/package.json
index 2606686..efae7ff 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
     "@types/core-js": "0.9.43",
     "canonical-path": "0.0.2",
     "concurrently": "^3.5.0",
-    "core-js": "^2.4.1",
+    "core-js": "^3.5.0",
     "http-server": "^0.11.0",
     "jasmine-core": "~2.8.0",
     "karma": "^2.0.0",