diff --git a/package.json b/package.json
index e29212dcf..d1b95700b 100644
--- a/package.json
+++ b/package.json
@@ -56,7 +56,7 @@
     "@fontsource/noto-sans-sc": "^4.2.1",
     "blurhash": "^1.1.3",
     "classlist.js": "https://github.com/eligrey/classList.js/archive/1.2.20180112.tar.gz",
-    "core-js": "^3.9.0",
+    "core-js": "^3.9.1",
     "date-fns": "^2.17.0",
     "epubjs": "^0.3.85",
     "fast-text-encoding": "^1.0.3",
diff --git a/yarn.lock b/yarn.lock
index 368a51906..bda48e771 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2328,10 +2328,10 @@ core-js-compat@^3.8.1, core-js-compat@^3.9.0:
     browserslist "^4.16.3"
     semver "7.0.0"
 
-core-js@^3.6.5, core-js@^3.9.0:
-  version "3.9.0"
-  resolved "https://registry.yarnpkg.com/core-js/-/core-js-3.9.0.tgz#790b1bb11553a2272b36e2625c7179db345492f8"
-  integrity sha512-PyFBJaLq93FlyYdsndE5VaueA9K5cNB7CGzeCj191YYLhkQM0gdZR2SKihM70oF0wdqKSKClv/tEBOpoRmdOVQ==
+core-js@^3.6.5, core-js@^3.9.1:
+  version "3.9.1"
+  resolved "https://registry.yarnpkg.com/core-js/-/core-js-3.9.1.tgz#cec8de593db8eb2a85ffb0dbdeb312cb6e5460ae"
+  integrity sha512-gSjRvzkxQc1zjM/5paAmL4idJBFzuJoo+jDjF1tStYFMV2ERfD02HhahhCGXUyHxQRG4yFKVSdO6g62eoRMcDg==
 
 core-util-is@~1.0.0:
   version "1.0.2"