diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3d7bb75e8f..fcbfd5371d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,115 @@
+# [3.0.0](https://github.com/socketio/socket.io/compare/2.3.0...3.0.0) (2020-11-05)
+
+### Bug Fixes
+
+* close clients with no namespace ([91cd255](https://github.com/socketio/socket.io/commit/91cd255ba76ff6a780c62740f9f5cd3a76f5d7c7))
+
+### Features
+
+* emit an Error object upon middleware error ([54bf4a4](https://github.com/socketio/socket.io/commit/54bf4a44e9e896dfb64764ee7bd4e8823eb7dc7b))
+* serve msgpack bundle ([aa7574f](https://github.com/socketio/socket.io/commit/aa7574f88471aa30ae472a5cddf1000a8baa70fd))
+* add support for catch-all listeners ([5c73733](https://github.com/socketio/socket.io/commit/5c737339858d59eab4b5ee2dd6feff0e82c4fe5a))
+* make Socket#join() and Socket#leave() synchronous ([129c641](https://github.com/socketio/socket.io/commit/129c6417bd818bc8b4e1b831644323876e627c13))
+* remove prod dependency to socket.io-client ([7603da7](https://github.com/socketio/socket.io/commit/7603da71a535481e3fc60e38b013abf78516d322))
+* move binary detection back to the parser ([669592d](https://github.com/socketio/socket.io/commit/669592d120409a5cf00f128070dee6d22259ba4f))
+* add ES6 module export ([8b6b100](https://github.com/socketio/socket.io/commit/8b6b100c284ccce7d85e55659e3397f533916847))
+* do not reuse the Engine.IO id ([2875d2c](https://github.com/socketio/socket.io/commit/2875d2cfdfa463e64cb520099749f543bbc4eb15))
+* remove Server#set() method ([029f478](https://github.com/socketio/socket.io/commit/029f478992f59b1eb5226453db46363a570eea46))
+* remove Socket#rooms object ([1507b41](https://github.com/socketio/socket.io/commit/1507b416d584381554d1ed23c9aaf3b650540071))
+* remove the 'origins' option ([a8c0600](https://github.com/socketio/socket.io/commit/a8c06006098b512ba1b8b8df82777349db486f41))
+* remove the implicit connection to the default namespace ([3289f7e](https://github.com/socketio/socket.io/commit/3289f7ec376e9ec88c2f90e2735c8ca8d01c0e97))
+* throw upon reserved event names ([4bd5b23](https://github.com/socketio/socket.io/commit/4bd5b2339a66a5a675e20f689fff2e70ff12d236))
+
+### BREAKING CHANGES
+
+* the Socket#use() method is removed (see [5c73733](https://github.com/socketio/socket.io/commit/5c737339858d59eab4b5ee2dd6feff0e82c4fe5a))
+
+* Socket#join() and Socket#leave() do not accept a callback argument anymore.
+
+Before:
+
+```js
+socket.join("room1", () => {
+ io.to("room1").emit("hello");
+});
+```
+
+After:
+
+```js
+socket.join("room1");
+io.to("room1").emit("hello");
+// or await socket.join("room1"); for custom adapters
+```
+
+* the "connected" map is renamed to "sockets"
+* the Socket#binary() method is removed, as this use case is now covered by the ability to provide your own parser.
+* the 'origins' option is removed
+
+Before:
+
+```js
+new Server(3000, {
+  origins: ["https://example.com"]
+});
+```
+
+The 'origins' option was used in the allowRequest method, in order to
+determine whether the request should pass or not. And the Engine.IO
+server would implicitly add the necessary Access-Control-Allow-xxx
+headers.
+
+After:
+
+```js
+new Server(3000, {
+  cors: {
+    origin: "https://example.com",
+    methods: ["GET", "POST"],
+    allowedHeaders: ["content-type"]
+  }
+});
+```
+
+The already existing 'allowRequest' option can be used for validation:
+
+```js
+new Server(3000, {
+  allowRequest: (req, callback) => {
+    callback(null, req.headers.referer.startsWith("https://example.com"));
+  }
+});
+```
+
+* Socket#rooms is now a Set instead of an object
+
+* Namespace#connected is now a Map instead of an object
+
+* there is no more implicit connection to the default namespace:
+
+```js
+// client-side
+const socket = io("/admin");
+
+// server-side
+io.on("connect", socket => {
+  // not triggered anymore
+})
+
+io.use((socket, next) => {
+  // not triggered anymore
+});
+
+io.of("/admin").use((socket, next) => {
+  // triggered
+});
+```
+
+* the Server#set() method was removed
+
+This method was kept for backward-compatibility with pre-1.0 versions.
+
+
 # [3.0.0-rc4](https://github.com/socketio/socket.io/compare/3.0.0-rc3...3.0.0-rc4) (2020-10-30)
 
 
diff --git a/client-dist/socket.io.js b/client-dist/socket.io.js
index f723198fee..5d85d58da0 100644
--- a/client-dist/socket.io.js
+++ b/client-dist/socket.io.js
@@ -1,5 +1,5 @@
 /*!
- * Socket.IO v3.0.0-rc4
+ * Socket.IO v3.0.0
  * (c) 2014-2020 Guillermo Rauch
  * Released under the MIT License.
  */
diff --git a/client-dist/socket.io.min.js b/client-dist/socket.io.min.js
index 2d86282426..85d78142fe 100644
--- a/client-dist/socket.io.min.js
+++ b/client-dist/socket.io.min.js
@@ -1,5 +1,5 @@
 /*!
- * Socket.IO v3.0.0-rc4
+ * Socket.IO v3.0.0
  * (c) 2014-2020 Guillermo Rauch
  * Released under the MIT License.
  */
diff --git a/client-dist/socket.io.msgpack.min.js b/client-dist/socket.io.msgpack.min.js
index a3dbc86217..5eed26b4cb 100644
--- a/client-dist/socket.io.msgpack.min.js
+++ b/client-dist/socket.io.msgpack.min.js
@@ -1,5 +1,5 @@
 /*!
- * Socket.IO v3.0.0-rc4
+ * Socket.IO v3.0.0
  * (c) 2014-2020 Guillermo Rauch
  * Released under the MIT License.
  */
diff --git a/package.json b/package.json
index 95eabd39bf..5cc6506503 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "socket.io",
-  "version": "3.0.0-rc4",
+  "version": "3.0.0",
   "description": "node.js realtime framework server",
   "keywords": [
     "realtime",
@@ -39,8 +39,8 @@
     "base64id": "~2.0.0",
     "debug": "~4.1.0",
     "engine.io": "~4.0.0",
-    "socket.io-adapter": "2.0.3-rc2",
-    "socket.io-parser": "4.0.1-rc3"
+    "socket.io-adapter": "~2.0.3",
+    "socket.io-parser": "~4.0.1"
   },
   "devDependencies": {
     "@types/cookie": "^0.4.0",
@@ -54,7 +54,7 @@
     "mocha": "^3.5.3",
     "nyc": "^11.2.1",
     "prettier": "^1.19.1",
-    "socket.io-client": "3.0.0-rc4",
+    "socket.io-client": "3.0.0",
     "superagent": "^3.8.2",
     "supertest": "^3.0.0",
     "ts-node": "^9.0.0",