diff --git a/docs/index.md b/docs/index.md
index be1aa68..c50c178 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -42,7 +42,7 @@ C++17, C++20, C++23, C++26 に関する情報を調査・提供します。
 - [sknjpn](https://x.com/sknjpn){:target="_blank"}
 - 野菜ジュース
 - [kagamiz](https://github.com/kagamiz){:target="_blank"}
-- [kt2763](https://github.com/kt2763){:target="_blank"}
+- [ysaito](https://x.com/ysaito8015){:target="_blank"}
 
 #### Bronze Sponsor
-アゲハマ, Fuyutsubaki, 😊, 🐝, jacking75, Chris Ohk, ysaito, ShivAlley, lamuda, fal_rnd, As Project, IZUNA, nasatame, 🌶️, PlumRice, 緑獺おがめ
+アゲハマ, Fuyutsubaki, 😊, 🐝, jacking75, Chris Ohk, ShivAlley, lamuda, fal_rnd, As Project, nasatame, 🌶️, 緑獺おがめ
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<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://github.com/mafafa-ese/cppmap.docs/compare/master...cppmap:cppmap.docs:master.diff">(-&gt;オリジナル)</a>
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<option value="larger-text">文字拡大</option>
<option value="mobile">モバイル</option>
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<input type="submit" value="表示" />
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