diff --git a/public/index.html b/public/index.html
index c56abe0..2f9abfe 100644
--- a/public/index.html
+++ b/public/index.html
@@ -2,7 +2,7 @@
 <html>
 <head>
   <meta charset="UTF-8">
-  <title>掲示板</title>
+  <title>生命の樹</title>
   <link rel="stylesheet" href="css/style.css">
   <style>
     h1{
@@ -11,7 +11,7 @@
   </style>
 </head>
 <body>
-  <h1>掲示板</h1>
+  <h1>生命の樹</h1>
   <div id="auth-area">
     <!-- Google サインインボタン -->
     <button id="sign-in-button">Google でサインイン</button>
@@ -32,4 +32,4 @@ <h2>トピック一覧</h2>
   <script src="https://www.gstatic.com/firebasejs/8.10.0/firebase-database.js"></script>
   <script src="js/app.js"></script>
 </body>
-</html>
\ No newline at end of file
+</html>
