diff --git a/.github/workflows/dn-rule.yml b/.github/workflows/dn-rule.yml
new file mode 100644
index 00000000..403b55cb
--- /dev/null
+++ b/.github/workflows/dn-rule.yml
@@ -0,0 +1,105 @@
+name: PR Label Automation
+on:
+  schedule:
+    - cron: '0 10 * * *'
+
+jobs:
+  update-labels:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check and Update PR Labels
+        uses: actions/github-script@v5
+        with:
+          script: |
+            const repo = context.repo;
+
+            // Fetch all open PRs
+            const prs = await github.rest.pulls.list({
+              owner: repo.owner,
+              repo: repo.repo,
+              state: 'open',
+            });
+
+            // Define the Discord webhook URL
+            const webhookUrl = 'https://discord.com/api/webhooks/1273159249672802304/vU5b6gC9bAHzyLXzWRzV7YqjIVCtO5_gLJ1URonjnbqn45Xa5kixYT1vMWxwLXqFi2y3';
+
+            for (const pr of prs.data) {
+              const prNumber = pr.number;
+              let labels = pr.labels.map(label => label.name);
+
+              // Function to update label
+              async function updateLabel(oldLabel, newLabel) {
+                if (oldLabel) {
+                  await github.rest.issues.removeLabel({
+                    owner: repo.owner,
+                    repo: repo.repo,
+                    issue_number: prNumber,
+                    name: oldLabel,
+                  });
+                }
+                await github.rest.issues.addLabels({
+                  owner: repo.owner,
+                  repo: repo.repo,
+                  issue_number: prNumber,
+                  labels: [newLabel],
+                });
+              }
+
+              // Check and update 'D-x' labels
+              let dLabel = labels.find(label => label.startsWith("D-"));
+              if (dLabel) {
+                let day = parseInt(dLabel.split("-")[1]);
+                if (day > 0) {
+                  const newDayLabel = `D-${day - 1}`;
+                  await updateLabel(dLabel, newDayLabel);
+                  console.log(`Updated label from ${dLabel} to ${newDayLabel} on PR #${prNumber}`);
+
+                  // Send a notification to Discord
+                  await fetch(webhookUrl, {
+                    method: 'POST',
+                    headers: {
+                      'Content-Type': 'application/json',
+                    },
+                    body: JSON.stringify({
+                      username: 'PR Bot',
+                      avatar_url: 'https://avatars.githubusercontent.com/u/9919?s=200&v=4',
+                      embeds: [
+                        {
+                          title: `📢 **PR #${prNumber} - ${pr.title} Review D-${day - 1}** 📢`,
+                          description: `리뷰를 작성해주세요! 리뷰 작성 기간이 ${day - 1}일 남았습니다.`,
+                          url: pr.html_url,
+                          color: 4620980,
+                          footer: {
+                            text: `D-day가 업데이트 되었습니다. ${dLabel} → ${newDayLabel}`
+                          }
+                        }
+                      ]
+                    })
+                  });
+                } else if (day === 0) {
+                  await fetch(webhookUrl, {
+                    method: 'POST',
+                    headers: {
+                      'Content-Type': 'application/json',
+                    },
+                    body: JSON.stringify({
+                      username: 'PR Bot',
+                      avatar_url: 'https://avatars.githubusercontent.com/u/9919?s=200&v=4',
+                      embeds: [
+                        {
+                          title: `❗ **PR #${prNumber} - ${pr.title} Review D-0** ❗`,
+                          description: `리뷰 마감일이 지났습니다! 리뷰를 작성해주세요.`,
+                          url: pr.html_url,
+                          color: 4620980,
+                          footer: {
+                            text: `D-day 상태: D-0`
+                          }
+                        }
+                      ]
+                    })
+                  });
+                }
+              } else {
+                await updateLabel(null, 'D-3');
+              }
+            }