diff --git a/test/Middleware/ResponseHeaderMiddlewareTest.php b/test/Middleware/ResponseHeaderMiddlewareTest.php
index bb34eca..75bc016 100644
--- a/test/Middleware/ResponseHeaderMiddlewareTest.php
+++ b/test/Middleware/ResponseHeaderMiddlewareTest.php
@@ -11,7 +11,6 @@
 use PHPUnit\Framework\TestCase;
 use Psr\Http\Message\ResponseInterface;
 use Psr\Http\Message\ServerRequestInterface;
-use Psr\Http\Message\StreamInterface;
 use Psr\Http\Server\RequestHandlerInterface;
 
 class ResponseHeaderMiddlewareTest extends TestCase