diff --git a/doc/en/html/about/copyright.html b/doc/en/html/about/copyright.html
index 1ff96c9dc..3bdb6dd79 100644
--- a/doc/en/html/about/copyright.html
+++ b/doc/en/html/about/copyright.html
@@ -105,7 +105,7 @@ <h3 id="copyright_teraterm">Copyright</h3>
   URL: https://teratermproject.github.io/
   Project: https://github.com/TeraTermProject/teraterm
 
-  Tera Term Pro(original): http://hp.vector.co.jp/authors/VA002416/
+  Tera Term Pro(original): https://www.vector.co.jp/soft/win95/net/se067018.html
   ANSI color change &amp; concatenating multi-line patch: http://www.sakurachan.org/ml/teraterm/msg00264.html
   IPv6 version Tera Term Pro: http://win6.jp/TeraTerm/index.html
   Eterm lookfeel transparency window patch: http://www.geocities.co.jp/SiliconValley-PaloAlto/4954/av.html
@@ -113,7 +113,6 @@ <h3 id="copyright_teraterm">Copyright</h3>
 
   Special thanks to ...
   - T.Teranishi - author of original Tera Term Pro
-    URL: http://hp.vector.co.jp/authors/VA002416/
   - Yutaka Hirata - added UTF-8 and SSH2 support
 </pre>
 
diff --git a/doc/ja/html/about/copyright.html b/doc/ja/html/about/copyright.html
index efc178e5d..2603db60c 100644
--- a/doc/ja/html/about/copyright.html
+++ b/doc/ja/html/about/copyright.html
@@ -98,7 +98,7 @@ <h2>Tera Term</h2>
   URL: https://teratermproject.github.io/
   Project: https://github.com/TeraTermProject/teraterm
 
-  Tera Term Pro(オリジナル): http://hp.vector.co.jp/authors/VA002416/
+  Tera Term Pro(オリジナル): https://www.vector.co.jp/soft/win95/net/se067018.html
   ANSIカラー色変更＆行連結パッチ: http://www.sakurachan.org/ml/teraterm/msg00264.html
   IPv6版Tera Term Pro: http://win6.jp/TeraTerm/index.html
   Eterm風透過ウィンドウ機能パッチ：http://www.geocities.co.jp/SiliconValley-PaloAlto/4954/av.html
@@ -106,7 +106,6 @@ <h2>Tera Term</h2>
 
   Special thanks to ... (敬称略)
   ・寺西高 (T.Teranishi) - オリジナルの Tera Term Pro の作者
-    URL: http://hp.vector.co.jp/authors/VA002416/
   ・平田豊 (Yutaka Hirata) - UTF-8対応 &amp; SSH2対応
 </pre>