diff --git a/Bridges/HttpKernel.php b/Bridges/HttpKernel.php
index e4f1c58..4f912bc 100644
--- a/Bridges/HttpKernel.php
+++ b/Bridges/HttpKernel.php
@@ -100,6 +100,10 @@ public function handle(ServerRequestInterface $request)
         if ($this->bootstrap instanceof HooksInterface) {
             $this->bootstrap->postHandle($this->application);
         }
+        
+        $request = null;
+        $syRequest = null;
+        $syResponse = null;
 
         return $response;
     }
@@ -191,6 +195,12 @@ protected function mapRequest(ServerRequestInterface $psrRequest)
             $syRequest->request = $syRequest->json();
         }
 
+        $post = null;
+        $uploadedFiles = null;
+        $mapFiles = null;
+        $cookies = null;
+        $query = null;
+
         return $syRequest;
     }
 
@@ -302,6 +312,12 @@ protected function mapResponse(SymfonyResponse $syResponse, $stdout='')
             }
         }
 
+        $headers = null;
+        $cookies = null;
+        $nativeHeaders = null;
+        $content = null;
+        $stdout = null;
+
         return $psrResponse;
     }