diff --git a/bootstrap/app.php b/bootstrap/app.php
index 7b162dac3d9..c1832766e15 100644
--- a/bootstrap/app.php
+++ b/bootstrap/app.php
@@ -10,9 +10,9 @@
         commands: __DIR__.'/../routes/console.php',
         health: '/up',
     )
-    ->withMiddleware(function (Middleware $middleware) {
+    ->withMiddleware(function (Middleware $middleware): void {
         //
     })
-    ->withExceptions(function (Exceptions $exceptions) {
+    ->withExceptions(function (Exceptions $exceptions): void {
         //
     })->create();