diff --git a/package.json b/package.json
index 68cb53e..b5e9124 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "@angular/platform-browser-dynamic": "^5.1.2",
     "@angular/router": "^5.1.2",
     "bootstrap": "^4.0.0",
-    "core-js": "^2.5.3",
+    "core-js": "^3.4.2",
     "intl": "^1.2.5",
     "rxjs": "^5.5.6",
     "zone.js": "^0.8.14"