diff --git a/docs/sha512.html b/docs/sha512.html
index 7b068c6..6c2163c 100644
--- a/docs/sha512.html
+++ b/docs/sha512.html
@@ -27,7 +27,7 @@
 <body>
   <nav class="navbar navbar-expand-lg navbar-light bg-light">
     <div class="container-fluid">
-      <a class="navbar-brand" href="#">ZEN Study ハッシュ値変換ツール</a>
+      <a class="navbar-brand" href="#">ハッシュ値変換ツール</a>
       <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
         <span class="navbar-toggler-icon"></span>
       </button>
@@ -71,4 +71,4 @@ <h4>結果</h4>
     </div>
   </footer>
 </body>
-</html>
\ No newline at end of file
+</html>
