diff --git a/src/Server/RequestHandler/PingHandler.php b/src/Server/RequestHandler/PingHandler.php
index 6f20d0b..e298740 100644
--- a/src/Server/RequestHandler/PingHandler.php
+++ b/src/Server/RequestHandler/PingHandler.php
@@ -4,13 +4,12 @@
 
 namespace PhpLlm\McpSdk\Server\RequestHandler;
 
-use PhpLlm\McpSdk\Message\Notification;
 use PhpLlm\McpSdk\Message\Request;
 use PhpLlm\McpSdk\Message\Response;
 
 final class PingHandler extends BaseRequestHandler
 {
-    public function createResponse(Request|Notification $message): Response
+    public function createResponse(Request $message): Response
     {
         return new Response($message->id, []);
     }
diff --git a/src/Server/RequestHandler/ToolCallHandler.php b/src/Server/RequestHandler/ToolCallHandler.php
index 2af41a3..a8f1088 100644
--- a/src/Server/RequestHandler/ToolCallHandler.php
+++ b/src/Server/RequestHandler/ToolCallHandler.php
@@ -8,7 +8,6 @@
 use PhpLlm\LlmChain\Exception\ExceptionInterface;
 use PhpLlm\LlmChain\Model\Response\ToolCall;
 use PhpLlm\McpSdk\Message\Error;
-use PhpLlm\McpSdk\Message\Notification;
 use PhpLlm\McpSdk\Message\Request;
 use PhpLlm\McpSdk\Message\Response;
 
@@ -19,7 +18,7 @@ public function __construct(
     ) {
     }
 
-    public function createResponse(Request|Notification $message): Response|Error
+    public function createResponse(Request $message): Response|Error
     {
         $name = $message->params['name'];
         $arguments = $message->params['arguments'] ?? [];
diff --git a/src/Server/RequestHandler/ToolListHandler.php b/src/Server/RequestHandler/ToolListHandler.php
index f1a1142..461ba8f 100644
--- a/src/Server/RequestHandler/ToolListHandler.php
+++ b/src/Server/RequestHandler/ToolListHandler.php
@@ -6,7 +6,6 @@
 
 use PhpLlm\LlmChain\Chain\Toolbox\Metadata;
 use PhpLlm\LlmChain\Chain\Toolbox\ToolboxInterface;
-use PhpLlm\McpSdk\Message\Notification;
 use PhpLlm\McpSdk\Message\Request;
 use PhpLlm\McpSdk\Message\Response;
 
@@ -17,7 +16,7 @@ public function __construct(
     ) {
     }
 
-    public function createResponse(Request|Notification $message): Response
+    public function createResponse(Request $message): Response
     {
         return new Response($message->id, [
             'tools' => array_map(function (Metadata $tool) {