diff --git a/package.json b/package.json
index 910c756..ac871b9 100644
--- a/package.json
+++ b/package.json
@@ -7,6 +7,7 @@
     "body-parser": "^1.19.0",
     "connect-redis": "^4.0.4",
     "cookie-parser": "^1.4.5",
+    "core-js": "^3.10.1",
     "cors": "^2.8.5",
     "dotenv": "^8.2.0",
     "env": "0.0.2",