Injecting Guzzle client in Symfony project

In the services.yaml file, I added guzzle client as a service:

guzzle:
    class: GuzzleHttpClient

In the service class, I try to inject Guzzle:

/**
 *  @var GuzzleHttpClient $httpClient;
 */
protected $httpClient;

public function __construct(GuzzleHttpClient $httpClient)
{
    $this->httpClient = $httpClient;
}

I get the following error:

Cannot autowire service "AppServiceMyService": argument "$httpClient" of method "__construct()" references class "GuzzleHttpClient" but no such service exists. You should maybe alias this class to the existing "guzzle" service.

What am I missing here?