diff --git a/.github/workflows/github-release.yml b/.github/workflows/github-release.yml
index 84d0b83f..f183fe4e 100644
--- a/.github/workflows/github-release.yml
+++ b/.github/workflows/github-release.yml
@@ -15,9 +15,13 @@ jobs:
       - name: Setup Node
         uses: actions/setup-node@v2
         with:
-          node-version: '16'
-      - run: npm install
-      - run: npm run build:prd
+          node-version: '20'
+    
+      - name: Build bundle.js
+        working-directory: optuna_dashboard
+        run: |
+          npm install
+          npm run build:prd
 
       - name: Set up Python
         uses: actions/setup-python@v4
diff --git a/.github/workflows/pypi-publish.yml b/.github/workflows/pypi-publish.yml
index d2ddf54d..2b0670bd 100644
--- a/.github/workflows/pypi-publish.yml
+++ b/.github/workflows/pypi-publish.yml
@@ -17,7 +17,7 @@ jobs:
     - name: Setup Node
       uses: actions/setup-node@v2
       with:
-        node-version: '16'
+        node-version: '20'
     
     - name: Build bundle.js
       working-directory: optuna_dashboard