diff --git a/config/app.php b/config/app.php
index ef76a7e..d229894 100644
--- a/config/app.php
+++ b/config/app.php
@@ -69,7 +69,7 @@ return [
     |
     */
 
-    'timezone' => 'UTC',
+    'timezone' => 'Asia/Tokyo',
 
     /*
     |--------------------------------------------------------------------------
@@ -82,7 +82,7 @@ return [
     |
     */
 
-    'locale' => 'en',
+    'locale' => 'ja',
 
     /*
     |--------------------------------------------------------------------------
@@ -95,7 +95,7 @@ return [
     |
     */
 
-    'fallback_locale' => 'en',
+    'fallback_locale' => 'ja',
 
     /*
     |--------------------------------------------------------------------------