diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1252c5012..a5abdf640 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,14 @@
 
 [1]: https://www.npmjs.com/package/@google-cloud/pubsub?activeTab=versions
 
+## [4.0.6](https://github.com/googleapis/nodejs-pubsub/compare/v4.0.5...v4.0.6) (2023-09-15)
+
+
+### Bug Fixes
+
+* Bump the minimum gax up to 4.0.4 to get grpc-js fixes ([#1829](https://github.com/googleapis/nodejs-pubsub/issues/1829)) ([cc86e2b](https://github.com/googleapis/nodejs-pubsub/commit/cc86e2b4f3593d3d6046dc5baee76e1431832acb))
+* **deps:** Update dependency @opentelemetry/semantic-conventions to ~1.17.0 ([#1824](https://github.com/googleapis/nodejs-pubsub/issues/1824)) ([679c6b8](https://github.com/googleapis/nodejs-pubsub/commit/679c6b82bdb6fe28c3bc8c31db2e10de1ee7e089))
+
 ## [4.0.5](https://github.com/googleapis/nodejs-pubsub/compare/v4.0.4...v4.0.5) (2023-09-07)
 
 
diff --git a/package.json b/package.json
index 46e8f31f0..d91b81c86 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@google-cloud/pubsub",
   "description": "Cloud Pub/Sub Client Library for Node.js",
-  "version": "4.0.5",
+  "version": "4.0.6",
   "license": "Apache-2.0",
   "author": "Google Inc.",
   "engines": {
@@ -58,7 +58,7 @@
     "arrify": "^2.0.0",
     "extend": "^3.0.2",
     "google-auth-library": "^9.0.0",
-    "google-gax": "^4.0.2",
+    "google-gax": "^4.0.4",
     "heap-js": "^2.2.0",
     "is-stream-ended": "^0.1.4",
     "lodash.snakecase": "^4.1.1",
diff --git a/samples/package.json b/samples/package.json
index b2abc542d..3cffdc950 100644
--- a/samples/package.json
+++ b/samples/package.json
@@ -21,7 +21,7 @@
     "precompile": "npm run clean"
   },
   "dependencies": {
-    "@google-cloud/pubsub": "^4.0.5",
+    "@google-cloud/pubsub": "^4.0.6",
     "@opentelemetry/api": "~1.1.0",
     "@opentelemetry/resources": "~1.3.1",
     "@opentelemetry/sdk-trace-node": "~1.3.1",