diff --git a/CHANGELOG.md b/CHANGELOG.md
index 959e10f4423d..c400089ead5c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 ## Changelog
 ##### Unreleased
+- Nothing
+
+##### 3.12.1 - 2021.05.09
 - Fixed some cases of `Function#toString` with multiple `core-js` instances
 - Fixed some possible `String#split` polyfill problems in V8 5.1
 
diff --git a/README.md b/README.md
index 2b1259a3e1c7..f48e4e379fa8 100644
--- a/README.md
+++ b/README.md
@@ -118,14 +118,14 @@ Promise.resolve(32).then(x => console.log(x)); // => 32
 ### Installation:[⬆](#index)
 ```
 // global version
-npm install --save core-js@3.12.0
+npm install --save core-js@3.12.1
 // version without global namespace pollution
-npm install --save core-js-pure@3.12.0
+npm install --save core-js-pure@3.12.1
 // bundled global version
-npm install --save core-js-bundle@3.12.0
+npm install --save core-js-bundle@3.12.1
 ```
 
-Already bundled version of `core-js` [on CDN](https://unpkg.com/core-js-bundle@3.12.0) ([minified version](https://unpkg.com/core-js-bundle@3.12.0/minified.js)).
+Already bundled version of `core-js` [on CDN](https://unpkg.com/core-js-bundle@3.12.1) ([minified version](https://unpkg.com/core-js-bundle@3.12.1/minified.js)).
 
 ### `postinstall` message[⬆](#index)
 The `core-js` project needs your help, so the package shows a message about it after installation. If it causes problems for you, you can disable it:
diff --git a/lerna.json b/lerna.json
index 804c3fe6667a..7303d9b4e29a 100644
--- a/lerna.json
+++ b/lerna.json
@@ -1,5 +1,5 @@
 {
-  "version": "3.12.0",
+  "version": "3.12.1",
   "packages": [
     "packages/*"
   ]
diff --git a/package.json b/package.json
index 323fb4675351..fc096963e1fa 100644
--- a/package.json
+++ b/package.json
@@ -1,5 +1,5 @@
 {
-  "version": "3.12.0",
+  "version": "3.12.1",
   "devDependencies": {
     "@babel/cli": "^7.13.16",
     "@babel/core": "^7.14.0",
diff --git a/packages/core-js-builder/package.json b/packages/core-js-builder/package.json
index 0050caec37b5..0fc61bfae17d 100644
--- a/packages/core-js-builder/package.json
+++ b/packages/core-js-builder/package.json
@@ -1,7 +1,7 @@
 {
   "name": "core-js-builder",
   "description": "core-js builder",
-  "version": "3.12.0",
+  "version": "3.12.1",
   "repository": {
     "type": "git",
     "url": "https://github.com/zloirock/core-js.git",
@@ -9,8 +9,8 @@
   },
   "main": "index.js",
   "dependencies": {
-    "core-js": "3.12.0",
-    "core-js-compat": "3.12.0",
+    "core-js": "3.12.1",
+    "core-js-compat": "3.12.1",
     "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 53cca709aee6..871ef84ce5d4 100644
--- a/packages/core-js-bundle/package.json
+++ b/packages/core-js-bundle/package.json
@@ -1,7 +1,7 @@
 {
   "name": "core-js-bundle",
   "description": "Standard library",
-  "version": "3.12.0",
+  "version": "3.12.1",
   "repository": {
     "type": "git",
     "url": "https://github.com/zloirock/core-js.git",
diff --git a/packages/core-js-compat/package.json b/packages/core-js-compat/package.json
index 5882bf49312a..e1e5b5fe56c0 100644
--- a/packages/core-js-compat/package.json
+++ b/packages/core-js-compat/package.json
@@ -1,7 +1,7 @@
 {
   "name": "core-js-compat",
   "description": "core-js compat",
-  "version": "3.12.0",
+  "version": "3.12.1",
   "repository": {
     "type": "git",
     "url": "https://github.com/zloirock/core-js.git",
diff --git a/packages/core-js-pure/package.json b/packages/core-js-pure/package.json
index 314335f537e2..87ebae54cf80 100644
--- a/packages/core-js-pure/package.json
+++ b/packages/core-js-pure/package.json
@@ -1,7 +1,7 @@
 {
   "name": "core-js-pure",
   "description": "Standard library",
-  "version": "3.12.0",
+  "version": "3.12.1",
   "repository": {
     "type": "git",
     "url": "https://github.com/zloirock/core-js.git",
diff --git a/packages/core-js/internals/shared.js b/packages/core-js/internals/shared.js
index 1b800e52db8b..b806d97b95c8 100644
--- a/packages/core-js/internals/shared.js
+++ b/packages/core-js/internals/shared.js
@@ -4,7 +4,7 @@ var store = require('../internals/shared-store');
 (module.exports = function (key, value) {
   return store[key] || (store[key] = value !== undefined ? value : {});
 })('versions', []).push({
-  version: '3.12.0',
+  version: '3.12.1',
   mode: IS_PURE ? 'pure' : 'global',
   copyright: '© 2021 Denis Pushkarev (zloirock.ru)'
 });
diff --git a/packages/core-js/package.json b/packages/core-js/package.json
index 895d457d6456..30fb3faa2db7 100644
--- a/packages/core-js/package.json
+++ b/packages/core-js/package.json
@@ -1,7 +1,7 @@
 {
   "name": "core-js",
   "description": "Standard library",
-  "version": "3.12.0",
+  "version": "3.12.1",
   "repository": {
     "type": "git",
     "url": "https://github.com/zloirock/core-js.git",