diff --git a/package.json b/package.json
index 489e4fb..39d7cb6 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
     "braces": "^3.0.2",
     "browser-sync": "^2.27.7",
     "child_process": "^1.0.2",
-    "core-js": "^3.20.3",
+    "core-js": "^3.21.0",
     "del": "^6.0.0",
     "fancy-log": "^2.0.0",
     "fstream": "^1.0.12",
diff --git a/yarn.lock b/yarn.lock
index 6655f80..7b851c9 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2226,10 +2226,10 @@ core-js-compat@^3.20.0, core-js-compat@^3.20.2:
     browserslist "^4.19.1"
     semver "7.0.0"
 
-core-js@^3.20.3:
-  version "3.20.3"
-  resolved "https://registry.yarnpkg.com/core-js/-/core-js-3.20.3.tgz#c710d0a676e684522f3db4ee84e5e18a9d11d69a"
-  integrity sha512-vVl8j8ph6tRS3B8qir40H7yw7voy17xL0piAjlbBUsH7WIfzoedL/ZOr1OV9FyZQLWXsayOJyV4tnRyXR85/ag==
+core-js@^3.21.0:
+  version "3.21.0"
+  resolved "https://registry.yarnpkg.com/core-js/-/core-js-3.21.0.tgz#f479dbfc3dffb035a0827602dd056839a774aa71"
+  integrity sha512-YUdI3fFu4TF/2WykQ2xzSiTQdldLB4KVuL9WeAy5XONZYt5Cun/fpQvctoKbCgvPhmzADeesTk/j2Rdx77AcKQ==
 
 core-util-is@1.0.2, core-util-is@~1.0.0:
   version "1.0.2"