diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1550d7bad..4b81185ee 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,13 @@
 
 [1]: https://www.npmjs.com/package/@google-cloud/pubsub?activeTab=versions
 
+## [4.3.3](https://github.com/googleapis/nodejs-pubsub/compare/v4.3.2...v4.3.3) (2024-03-03)
+
+
+### Bug Fixes
+
+* Add client library version to headers ([#1891](https://github.com/googleapis/nodejs-pubsub/issues/1891)) ([6b59195](https://github.com/googleapis/nodejs-pubsub/commit/6b59195aed8b6c6576e50512aeca9123ad0cc016))
+
 ## [4.3.2](https://github.com/googleapis/nodejs-pubsub/compare/v4.3.1...v4.3.2) (2024-02-13)
 
 
diff --git a/package.json b/package.json
index e03c7b43c..b30ccadaa 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": "4.3.2",
+  "version": "4.3.3",
   "license": "Apache-2.0",
   "author": "Google Inc.",
   "engines": {
@@ -81,7 +81,7 @@
     "c8": "^9.0.0",
     "codecov": "^3.0.0",
     "execa": "^5.0.0",
-    "gapic-tools": "^0.3.0",
+    "gapic-tools": "^0.4.0",
     "gts": "^5.0.0",
     "jsdoc": "^4.0.0",
     "jsdoc-fresh": "^3.0.0",
diff --git a/protos/google/pubsub/v1/pubsub.proto b/protos/google/pubsub/v1/pubsub.proto
index c548b2680..93e1e84a7 100644
--- a/protos/google/pubsub/v1/pubsub.proto
+++ b/protos/google/pubsub/v1/pubsub.proto
@@ -183,7 +183,7 @@ message SchemaSettings {
 message IngestionDataSourceSettings {
   // Ingestion settings for Amazon Kinesis Data Streams.
   message AwsKinesis {
-    // Possible states for managed ingestion from Amazon Kinesis Data Streams.
+    // Possible states for ingestion from Amazon Kinesis Data Streams.
     enum State {
       // Default value. This value is unused.
       STATE_UNSPECIFIED = 0;
@@ -312,8 +312,7 @@ message Topic {
   // Output only. An output-only field indicating the state of the topic.
   State state = 9 [(google.api.field_behavior) = OUTPUT_ONLY];
 
-  // Optional. Settings for managed ingestion from a data source into this
-  // topic.
+  // Optional. Settings for ingestion from a data source into this topic.
   IngestionDataSourceSettings ingestion_data_source_settings = 10
       [(google.api.field_behavior) = OPTIONAL];
 }
diff --git a/samples/package.json b/samples/package.json
index 9a852adf9..d97bff74a 100644
--- a/samples/package.json
+++ b/samples/package.json
@@ -21,7 +21,7 @@
     "precompile": "npm run clean"
   },
   "dependencies": {
-    "@google-cloud/pubsub": "^4.3.2",
+    "@google-cloud/pubsub": "^4.3.3",
     "@opentelemetry/api": "^1.6.0",
     "@opentelemetry/tracing": "^0.24.0",
     "avro-js": "^1.11.3",
diff --git a/src/v1/publisher_client.ts b/src/v1/publisher_client.ts
index 490e935e8..d12bf10cc 100644
--- a/src/v1/publisher_client.ts
+++ b/src/v1/publisher_client.ts
@@ -473,8 +473,7 @@ export class PublisherClient {
    * @param {google.pubsub.v1.Topic.State} request.state
    *   Output only. An output-only field indicating the state of the topic.
    * @param {google.pubsub.v1.IngestionDataSourceSettings} [request.ingestionDataSourceSettings]
-   *   Optional. Settings for managed ingestion from a data source into this
-   *   topic.
+   *   Optional. Settings for ingestion from a data source into this topic.
    * @param {object} [options]
    *   Call options. See {@link https://googleapis.dev/nodejs/google-gax/latest/interfaces/CallOptions.html|CallOptions} for more details.
    * @returns {Promise} - The promise which resolves to an array.