diff --git a/docs/reference/node_pool.md b/docs/reference/node_pool.md
index 7c53b6a1a..b1839871c 100644
--- a/docs/reference/node_pool.md
+++ b/docs/reference/node_pool.md
@@ -47,6 +47,10 @@ $transport = TransportBuilder::create()
 
 ### Using a custom NodePool, Selector and Resurrect [_using_a_custom_nodepool_selector_and_resurrect]
 
+::::{note}
+The Elasticsearch PHP client can be used to connect to on-premises, Elastic Cloud, or Serverless deployments. When using Elastic Cloud or Serverless, there is no need to configure a custom NodePool — the default one is sufficient.
+::::
+
 If you want you can implement your custom node pool algorithm. We provided a [NodePoolInterface](https://github.com/elastic/elastic-transport-php/blob/master/src/NodePool/NodePoolInterface.php)
 
 You can also customize the Selector and the Resurrect components of the node pool. You can use the following interfaces for the implementation:
diff --git a/src/Transport/Adapter/Guzzle.php b/src/Transport/Adapter/Guzzle.php
index dfacc97fe..7df3f7c19 100644
--- a/src/Transport/Adapter/Guzzle.php
+++ b/src/Transport/Adapter/Guzzle.php
@@ -15,6 +15,7 @@
 namespace Elastic\Elasticsearch\Transport\Adapter;
 
 use Elastic\Elasticsearch\Transport\RequestOptions;
+use GuzzleHttp\Client;
 use GuzzleHttp\RequestOptions As GuzzleOptions;
 use Psr\Http\Client\ClientInterface;
 
@@ -38,7 +39,13 @@ public function setConfig(ClientInterface $client, array $config, array $clientO
                     $guzzleConfig[GuzzleOptions::VERIFY] = $value;
             }
         }
+        /** @var Client $client */
+        if(method_exists($client, 'getConfig')){
+            $clientOptions = array_merge($clientOptions, $client->getConfig());
+        }
+
         $class = get_class($client);
+
         return new $class(array_merge($clientOptions, $guzzleConfig));
     }
 }
\ No newline at end of file
diff --git a/tests/Transport/Adapter/GuzzleTest.php b/tests/Transport/Adapter/GuzzleTest.php
index fec894d03..5e8fd3788 100644
--- a/tests/Transport/Adapter/GuzzleTest.php
+++ b/tests/Transport/Adapter/GuzzleTest.php
@@ -17,6 +17,7 @@
 use Elastic\Elasticsearch\Transport\Adapter\Guzzle;
 use Elastic\Elasticsearch\Transport\RequestOptions;
 use GuzzleHttp\Client;
+use GuzzleHttp\HandlerStack;
 use GuzzleHttp\RequestOptions As GuzzleOptions;
 use PHPUnit\Framework\TestCase;
 use Psr\Http\Client\ClientInterface;
@@ -65,4 +66,11 @@ public function testSetConfigWithSslCa()
         $this->assertInstanceOf(Client::class, $result);
         $this->assertEquals('test', $result->getConfig(GuzzleOptions::VERIFY));
     }
+
+    public function testSetConfigButNotOverwrittenClientOptions()
+    {
+        $result = $this->guzzleAdapter->setConfig(new Client(['base_uri' => 'http://localhost:12345']), [ RequestOptions::SSL_CA => 'test'], []);
+        $this->assertInstanceOf(Client::class, $result);
+        $this->assertEquals('http://localhost:12345', $result->getConfig('base_uri'));
+    }
 }
\ No newline at end of file