diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0530f5ffcf..42e8e36907 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,12 @@
+## [4.1.2](https://github.com/socketio/socket.io/compare/4.1.1...4.1.2) (2021-05-17)
+
+
+### Bug Fixes
+
+* **typings:** ensure compatibility with TypeScript 3.x ([0cb6ac9](https://github.com/socketio/socket.io/commit/0cb6ac95b49a27483b6f1b6402fa54b35f82e36f))
+* ensure compatibility with previous versions of the adapter ([a2cf248](https://github.com/socketio/socket.io/commit/a2cf2486c366cb62293101c10520c57f6984a3fc))
+
+
 ## [4.1.1](https://github.com/socketio/socket.io/compare/4.1.0...4.1.1) (2021-05-11)
 
 
diff --git a/client-dist/socket.io.js b/client-dist/socket.io.js
index 1f5e9dd731..d0d90bd91f 100644
--- a/client-dist/socket.io.js
+++ b/client-dist/socket.io.js
@@ -1,5 +1,5 @@
 /*!
- * Socket.IO v4.1.1
+ * Socket.IO v4.1.2
  * (c) 2014-2021 Guillermo Rauch
  * Released under the MIT License.
  */
diff --git a/client-dist/socket.io.min.js b/client-dist/socket.io.min.js
index a4b73d372c..6c1d8a77da 100644
--- a/client-dist/socket.io.min.js
+++ b/client-dist/socket.io.min.js
@@ -1,5 +1,5 @@
 /*!
- * Socket.IO v4.1.1
+ * Socket.IO v4.1.2
  * (c) 2014-2021 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 98d31a265c..ecb3f094a7 100644
--- a/client-dist/socket.io.msgpack.min.js
+++ b/client-dist/socket.io.msgpack.min.js
@@ -1,5 +1,5 @@
 /*!
- * Socket.IO v4.1.1
+ * Socket.IO v4.1.2
  * (c) 2014-2021 Guillermo Rauch
  * Released under the MIT License.
  */
diff --git a/package-lock.json b/package-lock.json
index 7e6a99bde8..bc945c24a4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "socket.io",
-  "version": "4.1.1",
+  "version": "4.1.2",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -3335,9 +3335,9 @@
       "integrity": "sha512-jdIbSFRWOkaZpo5mXy8T7rXEN6qo3bOFuq4nVeX1ZS7AtFlkbk39y153xTXEIW7W94vZfhVOux1wTU88YxcM1w=="
     },
     "socket.io-client": {
-      "version": "4.1.1",
-      "resolved": "https://registry.npmjs.org/socket.io-client/-/socket.io-client-4.1.1.tgz",
-      "integrity": "sha512-avzRzFZIkmyNxqvhmm5ns0Itq5dgEkesDPB6Tl0Yben47U08MvdFnVXAuFDULQhDXjuYdCb6QUEILYLUKQEuGg==",
+      "version": "4.1.2",
+      "resolved": "https://registry.npmjs.org/socket.io-client/-/socket.io-client-4.1.2.tgz",
+      "integrity": "sha512-RDpWJP4DQT1XeexmeDyDkm0vrFc0+bUsHDKiVGaNISJvJonhQQOMqV9Vwfg0ZpPJ27LCdan7iqTI92FRSOkFWQ==",
       "dev": true,
       "requires": {
         "@types/component-emitter": "^1.2.10",
diff --git a/package.json b/package.json
index 760e579731..5caffae270 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "socket.io",
-  "version": "4.1.1",
+  "version": "4.1.2",
   "description": "node.js realtime framework server",
   "keywords": [
     "realtime",
@@ -65,7 +65,7 @@
     "nyc": "^15.1.0",
     "prettier": "^2.2.0",
     "rimraf": "^3.0.2",
-    "socket.io-client": "4.1.1",
+    "socket.io-client": "4.1.2",
     "socket.io-client-v2": "npm:socket.io-client@^2.4.0",
     "superagent": "^6.1.0",
     "supertest": "^6.0.1",