diff --git a/.github/workflows/format.yml b/.github/workflows/format.yml
index cb54a3de9..0b437a451 100644
--- a/.github/workflows/format.yml
+++ b/.github/workflows/format.yml
@@ -15,7 +15,7 @@ jobs:
 
       - uses: actions/setup-node@v4
         with:
-          node-version: 18.x
+          node-version: 20.x
 
       - name: Run format
         run: npm run format
diff --git a/README.ja.md b/README.ja.md
index b9c163904..b7fc33476 100644
--- a/README.ja.md
+++ b/README.ja.md
@@ -65,12 +65,12 @@ astro-notion-blog を使えば [Notion](https://www.notion.so) で書けるブ
 10. 「ビルドの設定」で、
     1. 「フレームワーク プリセット」で Astro を選択します
     2. 「環境変数(アドバンスド)」 を開き `NODE_VERSION`, `NOTION_API_SECRET`, `DATABASE_ID` の 3 つを設定します
-       - `NODE_VERSION` は `v18.16.0` かそれ以上を指定します
+       - `NODE_VERSION` は `20.18.1` かそれ以上を指定します
        - 詳しくは [How to deploy a site with Git](https://docs.astro.build/en/guides/deploy/cloudflare/#how-to-deploy-a-site-with-git) をご覧ください
 
 <img src="https://user-images.githubusercontent.com/1063435/213967111-72ea2ad1-ad3b-4629-8b65-7b25bc6ddb31.png" width="400">
 
-<img src="https://github.com/otoyo/astro-notion-blog/assets/1063435/17ecdc09-c0f8-4332-8b87-04f4b2ffafce" width="600">
+<img src="https://github.com/user-attachments/assets/548a57eb-a152-4a56-8bf9-0853c76638a8" width="600">
 
 11. "Save and Deploy" をクリックし、デプロイが完了すると Notion Blog が見えるようになります
 
@@ -81,7 +81,7 @@ Cloudflare Pages のダッシュボードから手動でデプロイするか、
 
 ### 追加の必要要件
 
-- Node.js v18.14.1 かそれ以上
+- Node.js v20.18.1 かそれ以上
 - Git
 
 ### ステップ
diff --git a/README.md b/README.md
index df431d64c..f44fa7dcc 100644
--- a/README.md
+++ b/README.md
@@ -60,12 +60,12 @@ astro-notion-blog enables you to create a blog using [Notion](https://www.notion
 10. In "Build settings" section,
     1. Select "Astro" as "Framework preset"
     2. Open "Environment Variables (advanced)" and set `NODE_VERSION`, `NOTION_API_SECRET` and `DATABASE_ID`
-       - `NODE_VERSION` is `v18.16.0` or higher
+       - `NODE_VERSION` is `20.18.1` or higher
        - [How to deploy a site with Git](https://docs.astro.build/en/guides/deploy/cloudflare/#how-to-deploy-a-site-with-git) is helpful
 
 <img src="https://user-images.githubusercontent.com/1063435/213967061-06f488fe-0b42-40a5-8f19-ac441f0168ff.png" width="400">
 
-<img src="https://github.com/otoyo/astro-notion-blog/assets/1063435/bc1ceef1-d67a-490b-b465-34af1b0f8010" width="600">
+<img src="https://github.com/user-attachments/assets/34fa8e2e-db34-40d3-87a6-acdb0d4e66db" width="600">
 
 11. After clicking the 'Save and Deploy' button, your Notion Blog will be published once the deployment process is complete.
 
@@ -75,7 +75,7 @@ Please note that the astro-notion-blog requires manual deployment every time you
 
 ### Additional requirements
 
-- Node.js v18.14.1 or higher
+- Node.js v20.18.1 or higher
 
 ### Steps