diff --git a/src/Server/Transport/StreamableHttpTransport.php b/src/Server/Transport/StreamableHttpTransport.php
index 3a4c5ee..2b1e686 100644
--- a/src/Server/Transport/StreamableHttpTransport.php
+++ b/src/Server/Transport/StreamableHttpTransport.php
@@ -112,7 +112,7 @@ class StreamableHttpTransport extends BaseTransport
 
         $this->handleSessionEnd($this->sessionId);
 
-        return $this->withCorsHeaders($this->responseFactory->createResponse(204));
+        return $this->withCorsHeaders($this->responseFactory->createResponse(200));
     }
 
     protected function createJsonResponse(): ResponseInterface