diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
new file mode 100644
index 0000000..b87d34d
--- /dev/null
+++ b/.github/workflows/deploy.yml
@@ -0,0 +1,21 @@
+name: deploy
+on:
+  workflow_dispatch:
+  schedule:
+    # 3月16日土曜日 20:00 (JST) は 3月16日土曜日 11:00 (UTC)
+    # https://time.is/compare/JST/UTC
+    # https://crontab.guru/#00_11_16_03_SAT
+    - cron: 00 11 16 3 SAT
+  push:
+    branches: main
+jobs:
+  deploy:
+    if: github.ref == 'refs/heads/main'
+    runs-on: ubuntu-latest
+    timeout-minutes: 1
+    steps:
+      - name: Deploy
+        run: curl -sSf -X POST "${DEPLOY_WEBHOOK_URL}"
+        env:
+          # https://developers.cloudflare.com/pages/platform/deploy-hooks
+          DEPLOY_WEBHOOK_URL: ${{ secrets.DEPLOY_WEBHOOK_URL }}
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index b93b220..a9c6c03 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -1,5 +1,9 @@
 name: test
-on: pull_request
+on:
+  pull_request:
+  workflow_run:
+    workflows: deploy
+    types: completed
 jobs:
   test:
     strategy:
@@ -19,11 +23,16 @@ jobs:
         run: npm ci
       - name: Install Playwright Browsers
         run: npx playwright install --with-deps
-      - name: Run tests
+      - if: github.ref_name != github.event.repository.default_branch
+        id: set_preview_env
         shell: bash
-        run: BASE_URL="https://$(echo "${HEAD_REF}" | sed s/[^_0-9a-z]/-/gi).jwk.pages.dev/" npm test
+        run: echo url="https://$(echo "${HEAD_REF}" | sed s/[^_0-9a-z]/-/gi).jwk.pages.dev/" >> "${GITHUB_OUTPUT}"
         env:
           HEAD_REF: ${{ github.head_ref }}
+      - name: Run tests in ${{ env.BASE_URL }}
+        run: npm test
+        env:
+          BASE_URL: ${{ github.ref_name == github.event.repository.default_branch && 'https://jwk.pages.dev/' || steps.set_preview_env.outputs.url }}
       - uses: actions/upload-artifact@v4
         if: always()
         with: