diff --git a/src/Client.php b/src/Client.php
index dffa598a..4dade36c 100644
--- a/src/Client.php
+++ b/src/Client.php
@@ -50,9 +50,10 @@ public function __construct(
         ?ClientInterface $httpClient = null,
         ?RequestFactoryInterface $requestFactory = null,
         array $clientAgents = [],
-        ?StreamFactoryInterface $streamFactory = null
+        ?StreamFactoryInterface $streamFactory = null,
+        $headers = []
     ) {
-        $this->http = new MeilisearchClientAdapter($url, $apiKey, $httpClient, $requestFactory, $clientAgents, $streamFactory);
+        $this->http = new MeilisearchClientAdapter($url, $apiKey, $httpClient, $requestFactory, $clientAgents, $streamFactory, $headers);
         $this->index = new Indexes($this->http);
         $this->health = new Health($this->http);
         $this->version = new Version($this->http);
diff --git a/src/Http/Client.php b/src/Http/Client.php
index 9eef6472..3ea5f0a9 100644
--- a/src/Http/Client.php
+++ b/src/Http/Client.php
@@ -47,7 +47,8 @@ public function __construct(
         ?ClientInterface $httpClient = null,
         ?RequestFactoryInterface $reqFactory = null,
         array $clientAgents = [],
-        ?StreamFactoryInterface $streamFactory = null
+        ?StreamFactoryInterface $streamFactory = null,
+        $headers = []
     ) {
         $this->baseUrl = $url;
         $this->http = $httpClient ?? Psr18ClientDiscovery::find();
@@ -59,6 +60,7 @@ public function __construct(
         if (null !== $apiKey && '' !== $apiKey) {
             $this->headers['Authorization'] = \sprintf('Bearer %s', $apiKey);
         }
+        $this->headers = array_merge($this->headers, $headers);
         $this->json = new Json();
     }