diff --git a/CHANGELOG.md b/CHANGELOG.md
index e51a4a6f..16610a34 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,17 @@
 # Changelog
 
+## [2.4.0](https://www.github.com/googleapis/nodejs-iot/compare/v2.3.6...v2.4.0) (2021-09-03)
+
+
+### Features
+
+* turns on self-signed JWT feature flag ([#509](https://www.github.com/googleapis/nodejs-iot/issues/509)) ([09350a3](https://www.github.com/googleapis/nodejs-iot/commit/09350a3b33d418c94dc36d0ff3abd1e11958fc55))
+
+
+### Bug Fixes
+
+* **build:** migrate to main branch ([#512](https://www.github.com/googleapis/nodejs-iot/issues/512)) ([8528684](https://www.github.com/googleapis/nodejs-iot/commit/852868454982502c0a1ab0d2fa09f14bcfe5ff13))
+
 ### [2.3.6](https://www.github.com/googleapis/nodejs-iot/compare/v2.3.5...v2.3.6) (2021-08-17)
 
 
diff --git a/package.json b/package.json
index b6bf1e48..2c04f620 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@google-cloud/iot",
   "description": "Cloud IoT API client for Node.js",
-  "version": "2.3.6",
+  "version": "2.4.0",
   "license": "Apache-2.0",
   "author": "Google LLC",
   "engines": {
diff --git a/samples/package.json b/samples/package.json
index 1519e134..365739ce 100644
--- a/samples/package.json
+++ b/samples/package.json
@@ -15,7 +15,7 @@
     "test": "cd manager && npm test && cd ../ && cd http_example && npm test && cd ../ && cd mqtt_example && npm test && cd ../"
   },
   "dependencies": {
-    "@google-cloud/iot": "^2.3.6",
+    "@google-cloud/iot": "^2.4.0",
     "@google-cloud/pubsub": "^2.0.0"
   },
   "devDependencies": {