diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6ff66778..931356a4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,17 @@
 # Changelog
 
+## [1.4.0](https://github.com/GoogleCloudPlatform/cloud-sql-nodejs-connector/compare/v1.3.4...v1.4.0) (2024-09-30)
+
+
+### Features
+
+* support Cloud SQL CAS-based instances ([#390](https://github.com/GoogleCloudPlatform/cloud-sql-nodejs-connector/issues/390)) ([5d2c02f](https://github.com/GoogleCloudPlatform/cloud-sql-nodejs-connector/commit/5d2c02fb564b029490598d17bca82eefda0f659f))
+
+
+### Bug Fixes
+
+* only add PSC ipType if PSC is enabled ([#388](https://github.com/GoogleCloudPlatform/cloud-sql-nodejs-connector/issues/388)) ([28905c9](https://github.com/GoogleCloudPlatform/cloud-sql-nodejs-connector/commit/28905c9e65de325973c48b55626cd8f37f55888c))
+
 ## [1.3.4](https://github.com/GoogleCloudPlatform/cloud-sql-nodejs-connector/compare/v1.3.3...v1.3.4) (2024-08-02)
 
 
diff --git a/package-lock.json b/package-lock.json
index cd790b72..f8a5edfd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@google-cloud/cloud-sql-connector",
-  "version": "1.3.4",
+  "version": "1.4.0",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@google-cloud/cloud-sql-connector",
-      "version": "1.3.4",
+      "version": "1.4.0",
       "license": "Apache-2.0",
       "dependencies": {
         "@googleapis/sqladmin": "^24.0.0",
diff --git a/package.json b/package.json
index da5348e9..e17d58b2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@google-cloud/cloud-sql-connector",
-  "version": "1.3.4",
+  "version": "1.4.0",
   "description": "A JavaScript library for connecting securely to your Cloud SQL instances",
   "author": "Google Inc.",
   "main": "./dist/cjs/index.js",