diff --git a/game/templates/game.html.twig b/game/templates/game.html.twig
index 5e699ac..ee2d0da 100644
--- a/game/templates/game.html.twig
+++ b/game/templates/game.html.twig
@@ -7,6 +7,7 @@
     overflow: hidden;
   }
   </style>
+  <title>🧩 jigsaw.hyottoko.club</title>
 </head>
 <body>
   <script>window.GAME_ID = '{{GAME_ID}}'</script>
diff --git a/game/templates/index.html.twig b/game/templates/index.html.twig
index 9562a2c..9c64053 100644
--- a/game/templates/index.html.twig
+++ b/game/templates/index.html.twig
@@ -2,6 +2,7 @@
 <head>
   <link rel="stylesheet" href="/style.css" />
   <script src="https://cdn.jsdelivr.net/npm/vue@2.6.11"></script>
+  <title>🧩 jigsaw.hyottoko.club</title>
 </head>
 <body>
   <div id="app"></div>
