diff --git a/.github/workflows/AuthAssign.yml b/.github/workflows/AutoAssign.yml
similarity index 97%
rename from .github/workflows/AuthAssign.yml
rename to .github/workflows/AutoAssign.yml
index 08c4827..eeaa2b6 100644
--- a/.github/workflows/AuthAssign.yml
+++ b/.github/workflows/AutoAssign.yml
@@ -16,7 +16,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Get PR author
         id: get-pr-author
diff --git a/.github/workflows/IssueToPRLabelSyncer.yml b/.github/workflows/IssueToPRLabelSyncer.yml
deleted file mode 100644
index 606d17d..0000000
--- a/.github/workflows/IssueToPRLabelSyncer.yml
+++ /dev/null
@@ -1,56 +0,0 @@
-name: Issue to PR label sync
-
-on:
-  pull_request:
-    types:
-      - opened
-      - reopened
-
-jobs:
-  add-label:
-    permissions:
-      pull-requests: write
-      issues: read
-
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v3
-
-      - name: Extract issue number from PR title
-        id: extract-issue-number
-        run: echo "issue_number=$(echo ${{ github.event.pull_request.title }} | grep -oP '\[#[0-9]+\]' | grep -oP '[0-9]+')" >> $GITHUB_OUTPUT
-
-      - name: Check if issue number is found
-        id: check-issue-number
-        run: echo "valid_format=$(if [[ -n "${{ steps.extract-issue-number.outputs.issue_number }}" ]]; then echo "true"; else echo "false"; fi)" >> $GITHUB_OUTPUT
-
-      - name: Add label if valid issue format
-        if: steps.check-issue-number.outputs.valid_format == 'true'
-        run: |
-          ISSUE_NUMBER="${{ steps.extract-issue-number.outputs.issue_number }}"
-          echo "Found Issue Number: $ISSUE_NUMBER"
-          gh issue view $ISSUE_NUMBER --json labels --template "{{range .labels}}'{{.name}}',{{end}}" \
-           | sed 's/.$//g' \
-           | xargs -I LABELS gh pr edit ${{ github.event.number }} --add-label "LABELS"
-        env:
-          GH_TOKEN: ${{ github.token }}
-
-      - name: Skip if invalid issue format
-        if: steps.check-issue-number.outputs.valid_format == 'false'
-        run: echo "Invalid issue format. Skipping label addition."
-
-      - name: Comment success result to PR
-        uses: mshick/add-pr-comment@v2
-        if: steps.check-issue-number.outputs.valid_format == 'true'
-        with:
-          message: "## ✅ 이슈와 PR의 Labels 동기화를 성공했어요!"
-          allow-repeats: true
-
-      - name: Comment skip result to PR
-        uses: mshick/add-pr-comment@v2
-        if: steps.check-issue-number.outputs.valid_format == 'false'
-        with:
-          message: "## 🛠️ 이슈와 PR의 Labels 동기화를 스킵했어요."
-          allow-repeats: true