diff --git a/README.md b/README.md
index 910d78018..49cf8d54c 100644
--- a/README.md
+++ b/README.md
@@ -492,6 +492,16 @@ The `.codegraph/config.json` file controls indexing:
 
 **Missing symbols** — The MCP server auto-syncs on save (wait a couple seconds). Run `codegraph sync` manually if needed. Check that the file's language is supported and isn't excluded by config patterns.
 
+## Star History
+
+<a href="https://www.star-history.com/?repos=colbymchenry%2Fcodegraph&type=date&legend=top-left">
+ <picture>
+ <source media="(prefers-color-scheme: dark)" srcset="https://api.star-history.com/chart?repos=colbymchenry/codegraph&type=date&theme=dark&legend=top-left" />
+ <source media="(prefers-color-scheme: light)" srcset="https://api.star-history.com/chart?repos=colbymchenry/codegraph&type=date&legend=top-left" />
+ Star History Chart
+ </picture>
+</a>
+
 ## License
 
 MIT
</div><div class="naked_ctrl">
<form action="/index.cgi/contrast" method="get" name="gate">
<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/colbymchenry/codegraph/compare/main...hellowutong:codegraph:main.diff">(-&gt;オリジナル)</a>
/ <label>アドレス: <input type="text" name="naked_post_url" value="https://github.com/colbymchenry/codegraph/compare/main...hellowutong:codegraph:main.diff" size="22" /></label> <label>モード: <select name="naked_post_mode">
<option value="default">デフォルト</option>
<option value="speech">音声ブラウザ</option>
<option value="ruby">ルビ付き</option>
<option value="contrast" selected="selected">配色反転</option>
<option value="larger-text">文字拡大</option>
<option value="mobile">モバイル</option>
</select>
<input type="submit" value="表示" />
</p>
</form>
</div>