diff --git a/README.md b/README.md
index 14ece6207..717248660 100644
--- a/README.md
+++ b/README.md
@@ -207,11 +207,11 @@ We use `SCRIVITO_TENANT` and `SCRIVITO_API_KEY` keys in production, but they are
 
 ## [:books:](#howto-develop-docs) 4. 他、開発に関する資料
 
-開発に関する資料は [/docs](https://github.com/coderdojo-japan/coderdojo.jp/tree/main/docs) や下記サイトにまとめてあります (最新順)。必要に応じて適宜ご参照ください。
+開発に関する資料は [/doc](https://github.com/coderdojo-japan/coderdojo.jp/tree/main/doc) や下記サイトにまとめてあります (最新順)。必要に応じて適宜ご参照ください。
 
 - [[EN] Inside Web Development of coderdojo.jp](https://www.youtube.com/watch?v=7WR2ulUJwvQ&list=PL94GDfaSQTmKxMzXVMzzdl-zCmzgitQFP&index=8) (English Talk on YouTube by [@nanophate](https://github.com/nanophate))
 - [DojoCast を Jekyll から Rails に移行しました](https://yasslab.jp/ja/posts/migrate-dojocast-from-jekyll-to-rails)
-- [新規 Dojo の追加方法 - GitHub](https://github.com/coderdojo-japan/coderdojo.jp/blob/main/docs/how_to_add_dojo.md)
+- [新規 Dojo の追加方法 - GitHub](https://github.com/coderdojo-japan/coderdojo.jp/blob/main/doc/how_to_add_dojo.md)
 - [子どものためのプログラミング道場『CoderDojo』の Ruby/Rails 活用事例](https://speakerdeck.com/yasulab/case-study-of-how-coderdojo-japan-uses-ruby)
 - [CoderDojo を支える Rails CMS の活用事例 - Speaker Deck](https://speakerdeck.com/yasulab/case-study-rails-cms-for-coderdojo)
 - [2020年 coderdojo.jp 開発ふりかえり](https://note.com/yasslab/n/nb42fb058d4a0?magazine_key=m7ed183f728c3)
diff --git a/docs/how_to_add_dojo.md b/doc/how_to_add_dojo.md
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rename from docs/how_to_add_dojo.md
rename to doc/how_to_add_dojo.md
diff --git a/docs/how_to_aggregate_stats_and_events.md b/doc/how_to_aggregate_stats_and_events.md
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rename from docs/how_to_aggregate_stats_and_events.md
rename to doc/how_to_aggregate_stats_and_events.md
diff --git a/docs/how_to_update_db_id.md b/doc/how_to_update_db_id.md
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rename from docs/how_to_update_db_id.md
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diff --git a/docs/how_to_upload_podcasts.md b/doc/how_to_upload_podcasts.md
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rename from docs/how_to_upload_podcasts.md
rename to doc/how_to_upload_podcasts.md
diff --git a/docs/log_baseline_stats_before_inactivated_at.md b/doc/log_baseline_stats_before_inactivated_at.md
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rename from docs/log_baseline_stats_before_inactivated_at.md
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diff --git a/docs/plan_download_yearly_stats.md b/doc/plan_download_yearly_stats.md
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diff --git a/docs/plan_event_data_separation.md b/doc/plan_event_data_separation.md
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diff --git a/docs/plan_inactivated_at_column.md b/doc/plan_inactivated_at_column.md
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index 10d7cf34b..b561d8306 100644
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+++ b/doc/plan_inactivated_at_column.md
@@ -176,7 +176,7 @@ end
 
 #### 1. Git履歴からの日付抽出とYAML更新スクリプト
 
-参考実装: https://github.com/remote-jp/remote-in-japan/blob/main/docs/upsert_data_by_readme.rb#L28-L44
+参考実装: https://github.com/remote-jp/remote-in-japan/blob/main/doc/upsert_data_by_readme.rb#L28-L44
 
 ```ruby
 # lib/tasks/dojos.rake に追加