diff --git a/CHANGELOG.md b/CHANGELOG.md
index e3201859..14dbc22f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,13 @@
 
 [1]: https://www.npmjs.com/package/@google-cloud/text-to-speech?activeTab=versions
 
+## [4.0.1](https://github.com/googleapis/nodejs-text-to-speech/compare/v4.0.0...v4.0.1) (2022-06-30)
+
+
+### Bug Fixes
+
+* **docs:** describe fallback rest option ([#610](https://github.com/googleapis/nodejs-text-to-speech/issues/610)) ([26bc91a](https://github.com/googleapis/nodejs-text-to-speech/commit/26bc91afb45e51486061d00517c4acb0de7aaa2e))
+
 ## [4.0.0](https://github.com/googleapis/nodejs-text-to-speech/compare/v3.4.0...v4.0.0) (2022-06-10)
 
 
diff --git a/package.json b/package.json
index 5d1edb55..e9709b86 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@google-cloud/text-to-speech",
   "description": "Cloud Text-to-Speech API client for Node.js",
-  "version": "4.0.0",
+  "version": "4.0.1",
   "license": "Apache-2.0",
   "author": "Google LLC",
   "engines": {
diff --git a/samples/generated/v1/snippet_metadata.google.cloud.texttospeech.v1.json b/samples/generated/v1/snippet_metadata.google.cloud.texttospeech.v1.json
index dfdc0055..0a286884 100644
--- a/samples/generated/v1/snippet_metadata.google.cloud.texttospeech.v1.json
+++ b/samples/generated/v1/snippet_metadata.google.cloud.texttospeech.v1.json
@@ -1,7 +1,7 @@
 {
     "clientLibrary": {
         "name": "nodejs-texttospeech",
-        "version": "4.0.0",
+        "version": "4.0.1",
         "language": "TYPESCRIPT",
         "apis": [
             {
diff --git a/samples/generated/v1beta1/snippet_metadata.google.cloud.texttospeech.v1beta1.json b/samples/generated/v1beta1/snippet_metadata.google.cloud.texttospeech.v1beta1.json
index 0b441813..747594f6 100644
--- a/samples/generated/v1beta1/snippet_metadata.google.cloud.texttospeech.v1beta1.json
+++ b/samples/generated/v1beta1/snippet_metadata.google.cloud.texttospeech.v1beta1.json
@@ -1,7 +1,7 @@
 {
     "clientLibrary": {
         "name": "nodejs-texttospeech",
-        "version": "4.0.0",
+        "version": "4.0.1",
         "language": "TYPESCRIPT",
         "apis": [
             {
diff --git a/samples/package.json b/samples/package.json
index 1818f603..d1e8f41f 100644
--- a/samples/package.json
+++ b/samples/package.json
@@ -14,7 +14,7 @@
     "test": "mocha --timeout=60000"
   },
   "dependencies": {
-    "@google-cloud/text-to-speech": "^4.0.0",
+    "@google-cloud/text-to-speech": "^4.0.1",
     "yargs": "^16.0.0"
   },
   "devDependencies": {