diff --git a/composer.json b/composer.json
index 520c663..87b4514 100644
--- a/composer.json
+++ b/composer.json
@@ -19,6 +19,7 @@
         "nyholm/psr7": "^1.4",
         "nyholm/psr7-server": "^1.0",
         "psr/http-server-middleware": "^1.0",
+        "react/async": "@dev",
         "react/http": "^1.5",
         "symfony/runtime": "^5.3"
     },
diff --git a/src/SyncRunner.php b/src/SyncRunner.php
index 327fea5..ff8a214 100644
--- a/src/SyncRunner.php
+++ b/src/SyncRunner.php
@@ -9,6 +9,7 @@
 use Nyholm\Psr7\Factory\Psr17Factory;
 use Nyholm\Psr7Server\ServerRequestCreator;
 use React\EventLoop\Loop;
+use function React\Async\async;
 
 final class SyncRunner
 {
@@ -31,11 +32,13 @@ public function __construct(Application $application, SapiEmitter $sapi)
 
     public function run(): int
     {
-        $this->sapi->emit(
-            $this->application->handle($this->responseFactory->fromGlobals())
-        );
-
         $loop = Loop::get();
+        async(function (): void {
+            $this->sapi->emit(
+                $this->application->handle($this->responseFactory->fromGlobals())
+            );
+        });
+
         $loop->run();
 
         return 0;