diff --git a/README.md b/README.md
index 5aa75ea..35346c5 100644
--- a/README.md
+++ b/README.md
@@ -1,83 +1,3 @@
-<p align="center">
-  <img src="https://github.com/elastic/elasticsearch-py/raw/main/docs/logo-elastic-glyph-color.svg" width="20%" alt="Elastic logo" />
-</p>
+# :warning: This package is deprecated
 
-# Elasticsearch Serverless Client
-
-[![main](https://github.com/elastic/elasticsearch-serverless-js/actions/workflows/tests.yml/badge.svg?branch=main)](https://github.com/elastic/elasticsearch-serverless-js/actions/workflows/tests.yml)
-
-This is the official Node.js Elastic client for the [**Elasticsearch Cloud Serverless** service](https://www.elastic.co/elasticsearch/serverless).
-If you're looking to develop your Node.js application with the Elasticsearch Stack, you should look at the [Elasticsearch Client](https://github.com/elastic/elasticsearch-js) instead.
-If you're looking to develop your Node.js application with Elastic Enterprise Search, you should look at the [Enterprise Search Client](https://github.com/elastic/enterprise-search-js/).
-
-## Installation
-
-Install via npm:
-
-```shell
-npm install @elastic/elasticsearch-serverless
-```
-
-### Instantiate a Client
-
-```javascript
-const { Client } = require('@elastic/elasticsearch-serverless')
-const client = new Client({
-  node: 'https://', // serverless project URL
-  auth: { apiKey: 'your_api_key' }, // project API key
-})
-```
-
-### Using the API
-
-Once you've instantiated a client with your API key and Elasticsearch endpoint, you can start ingesting documents into Elasticsearch Service.
-You can use the **Bulk API** for this.
-This API allows you to index, update and delete several documents in one request.
-You call the `bulk` API on the client with a body parameter, an Array of hashes that define the action and a document.
-Here's an example of indexing some classic books into the `books` index:
-
-```javascript
-// First we build our data:
-const body = [
-  {name: "Snow Crash", "author": "Neal Stephenson", "release_date": "1992-06-01", "page_count": 470},
-  {name: "Revelation Space", "author": "Alastair Reynolds", "release_date": "2000-03-15", "page_count": 585},
-  {name: "1984", "author": "George Orwell", "release_date": "1985-06-01", "page_count": 328},
-  {name: "Fahrenheit 451", "author": "Ray Bradbury", "release_date": "1953-10-15", "page_count": 227},
-  {name: "Brave New World", "author": "Aldous Huxley", "release_date": "1932-06-01", "page_count": 268},
-  {name: "The Handmaid's Tale", "author": "Margaret Atwood", "release_date": "1985-06-01", "page_count": 311}
-]
-
-// Then we send the data using the bulk API helper:
-const result = await client.helpers.bulk({
-  datasource: body,
-  onDocument (doc) {
-    // instructs the bulk indexer to add each item in `body` to the books index
-    // you can optionally inspect each `doc` object to alter what action is performed per document
-    return {
-      index: { _index: 'books' }
-    }
-  }
-})
-```
-
-Now that some data is available, you can search your documents using the **Search API**:
-
-```js
-const result = await client.search({
-  index: 'books',
-  query: {
-    match: {
-      author: 'Ray Bradbury'
-    }
-  }
-})
-console.log(result.hits.hits)
-```
-
-## Development
-
-See [CONTRIBUTING](./CONTRIBUTING.md).
-
-### Docs
-
-Some general notes about this project can be found in [the docs directory](./docs/).
+This package is deprecated and no longer being maintained. All Elasticsearch serverless functionality has been merged into the [`@elastic/elasticsearch` client](https://www.github.com/elastic/elasticsearch-js).
diff --git a/package.json b/package.json
index 3a183ca..b57b2c6 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@elastic/elasticsearch-serverless",
-  "version": "0.9.0+20231031",
+  "version": "0.9.1+20231031",
   "description": "The official Node.js Elastic client for the Elasticsearch Serverless service.",
   "main": "./index.js",
   "types": "index.d.ts",
diff --git a/src/client.ts b/src/client.ts
index 19e8988..2b4dbb9 100644
--- a/src/client.ts
+++ b/src/client.ts
@@ -48,6 +48,8 @@ import API from './api'
 import packageJson from '../package.json'
 import transportPackageJson from '@elastic/transport/package.json'
 
+console.warn('This package is deprecated and no longer being supported or maintained. All Elasticsearch serverless functionality has been merged back into @elastic/elasticsearch.')
+
 const kChild = Symbol('elasticsearchjs-child')
 const kInitialOptions = Symbol('elasticsearchjs-initial-options')
 let clientVersion: string = packageJson.version