diff --git a/docs/external.md b/docs/external.md
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 * [最近読んだGo言語の本の紹介：100 Go Mistakes and How to Avoid Them](https://qiita.com/kentaro_suzuki/items/c9c31dc81217f237433c)
 * [『100 Go Mistakes and How to Avoid Them』を読む](https://zenn.dev/yukibobier/books/066f07c8a59fa0)
-* [100 Go Mistakes 随记 - 01 Code and project organization](https://zhuanlan.zhihu.com/p/592602656)
 
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