diff --git a/src/Connector.php b/src/Connector.php
index 456a3d1..930148f 100644
--- a/src/Connector.php
+++ b/src/Connector.php
@@ -6,7 +6,7 @@
 use React\Socket\ConnectionInterface;
 use React\Socket\ConnectorInterface;
 use React\Promise\Deferred;
-use React\Promise\RejectedPromise;
+use React\Promise\Internal\RejectedPromise;
 use Psr\Http\Message\RequestInterface;
 use GuzzleHttp\Psr7 as gPsr;
 
diff --git a/tests/unit/ConnectorTest.php b/tests/unit/ConnectorTest.php
index c560691..408f434 100644
--- a/tests/unit/ConnectorTest.php
+++ b/tests/unit/ConnectorTest.php
@@ -3,7 +3,7 @@
 use PHPUnit\Framework\TestCase;
 use Ratchet\Client\Connector;
 use React\EventLoop\Loop;
-use React\Promise\RejectedPromise;
+use React\Promise\Internal\RejectedPromise;
 use React\Promise\Promise;
 
 class ConnectorTest extends TestCase