diff --git a/src/ClientInterface.php b/src/ClientInterface.php
index 19068e1f..dec03508 100644
--- a/src/ClientInterface.php
+++ b/src/ClientInterface.php
@@ -51,7 +51,7 @@ interface ClientInterface
      * @return ResponseInterface
      * @throws GuzzleException
      */
-    public function request($method, $uri, array $options = []);
+    public function request($method, $uri = null, array $options = []);
 
     /**
      * Create and send an asynchronous HTTP request.