diff --git a/CHANGELOG.md b/CHANGELOG.md
index dcb91df58..8e4b974b5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,16 @@
+# [4.0.0-alpha.1](https://github.com/socketio/engine.io-client/compare/v4.0.0-alpha.0...v4.0.0-alpha.1) (2020-02-12)
+
+
+### Bug Fixes
+
+* properly assign options when creating the transport ([7c7f1a9](https://github.com/socketio/engine.io-client/commit/7c7f1a9fe24856e3a155db1dc67d12d1586ffa37))
+
+#### Links
+
+- Server release: [v4.0.0-alpha.1](https://github.com/socketio/engine.io/releases/tag/v4.0.0-alpha.1)
+- ws version: [~7.2.1](https://github.com/websockets/ws/releases/tag/7.2.1)
+
+
 # [4.0.0-alpha.0](https://github.com/socketio/engine.io-client/compare/3.4.0...v4.0.0-alpha.0) (2020-02-12)
 
 
diff --git a/dist/engine.io.js b/dist/engine.io.js
index be1852e04..5fec3a957 100644
--- a/dist/engine.io.js
+++ b/dist/engine.io.js
@@ -1,8 +1,8 @@
 /*!
- * Engine.IO v4.0.0-alpha.0
+ * Engine.IO v4.0.0-alpha.1
  * (c) 2014-2020 Guillermo Rauch
  * Released under the MIT License.
  */
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diff --git a/package-lock.json b/package-lock.json
index 67fd03b6c..125b90b6f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "engine.io-client",
-  "version": "4.0.0-alpha.0",
+  "version": "4.0.0-alpha.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 101632e09..a938a66e7 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "engine.io-client",
   "description": "Client for the realtime Engine",
   "license": "MIT",
-  "version": "4.0.0-alpha.0",
+  "version": "4.0.0-alpha.1",
   "main": "lib/index.js",
   "homepage": "https://github.com/socketio/engine.io-client",
   "contributors": [