diff --git a/packages/google-cloud-dialogflow-cx/CHANGELOG.md b/packages/google-cloud-dialogflow-cx/CHANGELOG.md
index 203530068c0..fc25e3b8a7b 100644
--- a/packages/google-cloud-dialogflow-cx/CHANGELOG.md
+++ b/packages/google-cloud-dialogflow-cx/CHANGELOG.md
@@ -1,5 +1,21 @@
 # Changelog
 
+## [2.4.0](https://www.github.com/googleapis/nodejs-dialogflow-cx/compare/v2.3.0...v2.4.0) (2021-03-15)
+
+
+### Features
+
+* added fallback option when restoring an agent docs: clarified experiment length ([f90bb9c](https://www.github.com/googleapis/nodejs-dialogflow-cx/commit/f90bb9cd369659160a16fcfc67bc08c248bd1552))
+* added fallback option when restoring an agent docs: clarified experiment length ([f90bb9c](https://www.github.com/googleapis/nodejs-dialogflow-cx/commit/f90bb9cd369659160a16fcfc67bc08c248bd1552))
+* allow to disable webhook invocation per request ([f90bb9c](https://www.github.com/googleapis/nodejs-dialogflow-cx/commit/f90bb9cd369659160a16fcfc67bc08c248bd1552))
+* allow to disable webhook invocation per request ([3b1b674](https://www.github.com/googleapis/nodejs-dialogflow-cx/commit/3b1b674bbddbcb26fa607f9dc16db6c43752c371))
+* supports SentimentAnalysisResult in webhook request, add http rules for long running operations docs: minor ([3b1b674](https://www.github.com/googleapis/nodejs-dialogflow-cx/commit/3b1b674bbddbcb26fa607f9dc16db6c43752c371))
+
+
+### Bug Fixes
+
+* RunTestCase http template. PHP REST client lib can be generated. feat: Support transition route group coverage for Test Cases. feat: Support SentimentAnalysisResult input in the WebhookRequest. ([3b1b674](https://www.github.com/googleapis/nodejs-dialogflow-cx/commit/3b1b674bbddbcb26fa607f9dc16db6c43752c371))
+
 ## [2.3.0](https://www.github.com/googleapis/nodejs-dialogflow-cx/compare/v2.2.0...v2.3.0) (2021-03-01)
 
 
diff --git a/packages/google-cloud-dialogflow-cx/package.json b/packages/google-cloud-dialogflow-cx/package.json
index 0c915e5a11a..2473689c2bd 100644
--- a/packages/google-cloud-dialogflow-cx/package.json
+++ b/packages/google-cloud-dialogflow-cx/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@google-cloud/dialogflow-cx",
-  "version": "2.3.0",
+  "version": "2.4.0",
   "description": "Cx client for Node.js",
   "repository": "googleapis/nodejs-dialogflow-cx",
   "license": "Apache-2.0",
diff --git a/packages/google-cloud-dialogflow-cx/samples/package.json b/packages/google-cloud-dialogflow-cx/samples/package.json
index b93498f0da2..28180b55741 100644
--- a/packages/google-cloud-dialogflow-cx/samples/package.json
+++ b/packages/google-cloud-dialogflow-cx/samples/package.json
@@ -13,7 +13,7 @@
     "test": "c8 mocha --timeout 600000 test/*.js"
   },
   "dependencies": {
-    "@google-cloud/dialogflow-cx": "^2.3.0",
+    "@google-cloud/dialogflow-cx": "^2.4.0",
     "uuid": "^8.3.1"
   },
   "devDependencies": {