diff --git a/src/app.html b/src/app.html
index 2d06c87..867dcda 100644
--- a/src/app.html
+++ b/src/app.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="en">
+<html lang="ja">
 	<head>
 		<meta charset="utf-8" />
 		<link rel="icon" href="%sveltekit.assets%/favicon.png" />
@@ -9,4 +9,4 @@
 	<body>
 		%sveltekit.body%
 	</body>
-</html>
+</html>
\ No newline at end of file
