diff --git a/package.json b/package.json
index e29212dcf7..d1b95700be 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 368a519063..bda48e7718 100644
Binary files a/yarn.lock and b/yarn.lock differ