diff --git a/CHANGELOG.md b/CHANGELOG.md
index 63fc8b4c4629..46eef81d66ba 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 ## Changelog
 ##### Unreleased
+- Nothing
+
+##### [3.27.1 - 2022.12.30](https://github.com/zloirock/core-js/releases/tag/v3.27.1)
 - Fixed a Chakra-based MS Edge (18-) bug that unfreeze (O_o) frozen arrays used as `WeakMap` keys
 - Fixing of the previous bug also fixes some cases of `String.dedent` in MS Edge
 - Fixed dependencies of some entries
diff --git a/README.md b/README.md
index b94049ce54cd..2286e0fbbf14 100644
--- a/README.md
+++ b/README.md
@@ -203,11 +203,11 @@ structuredClone(new Set([1, 2, 3])); // => new Set([1, 2, 3])
 ### Installation:[⬆](#index)
 ```sh
 // global version
-npm install --save core-js@3.27.0
+npm install --save core-js@3.27.1
 // version without global namespace pollution
-npm install --save core-js-pure@3.27.0
+npm install --save core-js-pure@3.27.1
 // bundled global version
-npm install --save core-js-bundle@3.27.0
+npm install --save core-js-bundle@3.27.1
 ```
 
 Or you can use `core-js` [from CDN](https://www.jsdelivr.com/package/npm/core-js-bundle).
diff --git a/deno/corejs/README.md b/deno/corejs/README.md
index d95f7909492c..efe3b6b7744b 100644
--- a/deno/corejs/README.md
+++ b/deno/corejs/README.md
@@ -28,7 +28,7 @@
 
 *Example*:
 ```js
-import 'https://deno.land/x/corejs@v3.27.0/index.js'; // <- at the top of your entry point
+import 'https://deno.land/x/corejs@v3.27.1/index.js'; // <- at the top of your entry point
 
 Object.hasOwn({ foo: 42 }, 'foo');   // => true
 
diff --git a/deno/corejs/index.js b/deno/corejs/index.js
index 20791d1a7204..fc299189736f 100644
--- a/deno/corejs/index.js
+++ b/deno/corejs/index.js
@@ -1,7 +1,7 @@
 /**
- * core-js 3.27.0
+ * core-js 3.27.1
  * © 2014-2022 Denis Pushkarev (zloirock.ru)
- * license: https://github.com/zloirock/core-js/blob/v3.27.0/LICENSE
+ * license: https://github.com/zloirock/core-js/blob/v3.27.1/LICENSE
  * source: https://github.com/zloirock/core-js
  */
 !function (undefined) { 'use strict'; /******/ (function(modules) { // webpackBootstrap
@@ -939,10 +939,10 @@ var store = __webpack_require__(36);
 (module.exports = function (key, value) {
   return store[key] || (store[key] = value !== undefined ? value : {});
 })('versions', []).push({
-  version: '3.27.0',
+  version: '3.27.1',
   mode: IS_PURE ? 'pure' : 'global',
   copyright: '© 2014-2022 Denis Pushkarev (zloirock.ru)',
-  license: 'https://github.com/zloirock/core-js/blob/v3.27.0/LICENSE',
+  license: 'https://github.com/zloirock/core-js/blob/v3.27.1/LICENSE',
   source: 'https://github.com/zloirock/core-js'
 });
 
@@ -7831,6 +7831,7 @@ __webpack_require__(242);
 
 "use strict";
 
+var FREEZING = __webpack_require__(238);
 var global = __webpack_require__(3);
 var uncurryThis = __webpack_require__(13);
 var defineBuiltIns = __webpack_require__(166);
@@ -7838,10 +7839,26 @@ var InternalMetadataModule = __webpack_require__(232);
 var collection = __webpack_require__(231);
 var collectionWeak = __webpack_require__(243);
 var isObject = __webpack_require__(19);
-var isExtensible = __webpack_require__(236);
 var enforceInternalState = __webpack_require__(51).enforce;
+var fails = __webpack_require__(6);
 var NATIVE_WEAK_MAP = __webpack_require__(52);
 
+var $Object = Object;
+// eslint-disable-next-line es/no-array-isarray -- safe
+var isArray = Array.isArray;
+// eslint-disable-next-line es/no-object-isextensible -- safe
+var isExtensible = $Object.isExtensible;
+// eslint-disable-next-line es/no-object-isfrozen -- safe
+var isFrozen = $Object.isFrozen;
+// eslint-disable-next-line es/no-object-issealed -- safe
+var isSealed = $Object.isSealed;
+// eslint-disable-next-line es/no-object-freeze -- safe
+var freeze = $Object.freeze;
+// eslint-disable-next-line es/no-object-seal -- safe
+var seal = $Object.seal;
+
+var FROZEN = {};
+var SEALED = {};
 var IS_IE11 = !global.ActiveXObject && 'ActiveXObject' in global;
 var InternalWeakMap;
 
@@ -7854,18 +7871,27 @@ var wrapper = function (init) {
 // `WeakMap` constructor
 // https://tc39.es/ecma262/#sec-weakmap-constructor
 var $WeakMap = collection('WeakMap', wrapper, collectionWeak);
+var WeakMapPrototype = $WeakMap.prototype;
+var nativeSet = uncurryThis(WeakMapPrototype.set);
+
+// Chakra Edge bug: adding frozen arrays to WeakMap unfreeze them
+var hasMSEdgeFreezingBug = function () {
+  return FREEZING && fails(function () {
+    var frozenArray = freeze([]);
+    nativeSet(new $WeakMap(), frozenArray, 1);
+    return !isFrozen(frozenArray);
+  });
+};
 
 // IE11 WeakMap frozen keys fix
 // We can't use feature detection because it crash some old IE builds
 // https://github.com/zloirock/core-js/issues/485
-if (NATIVE_WEAK_MAP && IS_IE11) {
+if (NATIVE_WEAK_MAP) if (IS_IE11) {
   InternalWeakMap = collectionWeak.getConstructor(wrapper, 'WeakMap', true);
   InternalMetadataModule.enable();
-  var WeakMapPrototype = $WeakMap.prototype;
   var nativeDelete = uncurryThis(WeakMapPrototype['delete']);
   var nativeHas = uncurryThis(WeakMapPrototype.has);
   var nativeGet = uncurryThis(WeakMapPrototype.get);
-  var nativeSet = uncurryThis(WeakMapPrototype.set);
   defineBuiltIns(WeakMapPrototype, {
     'delete': function (key) {
       if (isObject(key) && !isExtensible(key)) {
@@ -7897,6 +7923,21 @@ if (NATIVE_WEAK_MAP && IS_IE11) {
       return this;
     }
   });
+// Chakra Edge frozen keys fix
+} else if (hasMSEdgeFreezingBug()) {
+  defineBuiltIns(WeakMapPrototype, {
+    set: function set(key, value) {
+      var arrayIntegrityLevel;
+      if (isArray(key)) {
+        if (isFrozen(key)) arrayIntegrityLevel = FROZEN;
+        else if (isSealed(key)) arrayIntegrityLevel = SEALED;
+      }
+      nativeSet(this, key, value);
+      if (arrayIntegrityLevel == FROZEN) freeze(key);
+      if (arrayIntegrityLevel == SEALED) seal(key);
+      return this;
+    }
+  });
 }
 
 
diff --git a/docs/compat/compat-data.js b/docs/compat/compat-data.js
index c973f85345e4..f594b338707c 100644
--- a/docs/compat/compat-data.js
+++ b/docs/compat/compat-data.js
@@ -5465,7 +5465,7 @@
     "chrome": "51",
     "chrome-android": "51",
     "deno": "1.0",
-    "edge": "15",
+    "edge": "79",
     "electron": "1.2",
     "firefox": "53",
     "firefox-android": "53",
@@ -5486,7 +5486,7 @@
     "chrome": "51",
     "chrome-android": "51",
     "deno": "1.0",
-    "edge": "15",
+    "edge": "79",
     "electron": "1.2",
     "firefox": "53",
     "firefox-android": "53",
diff --git a/docs/compat/tests.js b/docs/compat/tests.js
index 15b5d9406426..f22ac59cfe5e 100644
--- a/docs/compat/tests.js
+++ b/docs/compat/tests.js
@@ -1364,7 +1364,7 @@ GLOBAL.tests = {
     return unescape;
   },
   'es.weak-map.constructor': [SAFE_ITERATION_CLOSING_SUPPORT, function () {
-    var key = Object.freeze({});
+    var key = Object.freeze([]);
     var called = 0;
     var iterable = {
       next: function () {
@@ -1376,10 +1376,13 @@ GLOBAL.tests = {
     };
 
     var map = new WeakMap(iterable);
+    // MS IE bug
     return map.get(key) == 1
       && map.get(null) == undefined
       && map.set({}, 2) == map
-      && map[Symbol.toStringTag];
+      && map[Symbol.toStringTag]
+      // MS Edge bug
+      && Object.isFrozen(key);
   }],
   'es.weak-set.constructor': [SAFE_ITERATION_CLOSING_SUPPORT, function () {
     var key = {};
diff --git a/package.json b/package.json
index f552526fa6a4..ab301425c025 100644
--- a/package.json
+++ b/package.json
@@ -1,5 +1,5 @@
 {
-  "version": "3.27.0",
+  "version": "3.27.1",
   "repository": {
     "type": "git",
     "url": "https://github.com/zloirock/core-js.git"
diff --git a/packages/core-js-builder/package.json b/packages/core-js-builder/package.json
index 8df0a04e7588..b876d27eba83 100644
--- a/packages/core-js-builder/package.json
+++ b/packages/core-js-builder/package.json
@@ -1,6 +1,6 @@
 {
   "name": "core-js-builder",
-  "version": "3.27.0",
+  "version": "3.27.1",
   "description": "core-js builder",
   "repository": {
     "type": "git",
@@ -20,8 +20,8 @@
   "sideEffects": false,
   "main": "index.js",
   "dependencies": {
-    "core-js": "3.27.0",
-    "core-js-compat": "3.27.0",
+    "core-js": "3.27.1",
+    "core-js-compat": "3.27.1",
     "mkdirp": ">=0.5.5 <1",
     "webpack": ">=4.46.0 <5"
   },
diff --git a/packages/core-js-bundle/package.json b/packages/core-js-bundle/package.json
index 312de9813f21..b3109bf60343 100644
--- a/packages/core-js-bundle/package.json
+++ b/packages/core-js-bundle/package.json
@@ -1,6 +1,6 @@
 {
   "name": "core-js-bundle",
-  "version": "3.27.0",
+  "version": "3.27.1",
   "description": "Standard library",
   "keywords": [
     "ES3",
diff --git a/packages/core-js-compat/package.json b/packages/core-js-compat/package.json
index 40b2fa8364cc..c4870315836e 100644
--- a/packages/core-js-compat/package.json
+++ b/packages/core-js-compat/package.json
@@ -1,6 +1,6 @@
 {
   "name": "core-js-compat",
-  "version": "3.27.0",
+  "version": "3.27.1",
   "description": "core-js compat",
   "repository": {
     "type": "git",
diff --git a/packages/core-js-pure/package.json b/packages/core-js-pure/package.json
index 46668c84417b..e7b31634a836 100644
--- a/packages/core-js-pure/package.json
+++ b/packages/core-js-pure/package.json
@@ -1,6 +1,6 @@
 {
   "name": "core-js-pure",
-  "version": "3.27.0",
+  "version": "3.27.1",
   "description": "Standard library",
   "keywords": [
     "ES3",
diff --git a/packages/core-js/internals/shared.js b/packages/core-js/internals/shared.js
index f0fca8632ae7..7d572f18f3ba 100644
--- a/packages/core-js/internals/shared.js
+++ b/packages/core-js/internals/shared.js
@@ -4,9 +4,9 @@ var store = require('../internals/shared-store');
 (module.exports = function (key, value) {
   return store[key] || (store[key] = value !== undefined ? value : {});
 })('versions', []).push({
-  version: '3.27.0',
+  version: '3.27.1',
   mode: IS_PURE ? 'pure' : 'global',
   copyright: '© 2014-2022 Denis Pushkarev (zloirock.ru)',
-  license: 'https://github.com/zloirock/core-js/blob/v3.27.0/LICENSE',
+  license: 'https://github.com/zloirock/core-js/blob/v3.27.1/LICENSE',
   source: 'https://github.com/zloirock/core-js'
 });
diff --git a/packages/core-js/package.json b/packages/core-js/package.json
index 2cd03b7bdca6..4ead0f4e08ac 100644
--- a/packages/core-js/package.json
+++ b/packages/core-js/package.json
@@ -1,6 +1,6 @@
 {
   "name": "core-js",
-  "version": "3.27.0",
+  "version": "3.27.1",
   "description": "Standard library",
   "keywords": [
     "ES3",