diff --git a/.github/workflows/auto-assign-reviewers.yml b/.github/workflows/auto-assign-reviewers.yml
index 97e38488..ba48e125 100644
--- a/.github/workflows/auto-assign-reviewers.yml
+++ b/.github/workflows/auto-assign-reviewers.yml
@@ -13,7 +13,7 @@ jobs:
         with:
           script: |
             if (context.payload.pull_request) {
-              await github.issues.addAssignees({
+              await github.rest.issues.addAssignees({
                 owner: context.repo.owner,
                 repo: context.repo.repo,
                 issue_number: context.payload.pull_request.number,
@@ -25,12 +25,11 @@ jobs:
 
       - name: 'Add "확인 요청" Label if not present'
         uses: actions/github-script@v6
-        id: label_check
         with:
           script: |
             const labels = context.payload.pull_request.labels || [];
             if (!labels.some(label => label.name === '확인 요청')) {
-              await github.issues.addLabels({
+              await github.rest.issues.addLabels({
                 owner: context.repo.owner,
                 repo: context.repo.repo,
                 issue_number: context.payload.pull_request.number,
@@ -44,11 +43,12 @@ jobs:
         with:
           script: |
             const targetBranch = context.payload.pull_request.base.ref;
-            return targetBranch === 'main' ? 3 : 2;
+            const reviewers = targetBranch === 'main' ? 3 : 2;
+            core.setOutput('number_of_reviewers', reviewers);
 
       - name: 'Assign Reviewers'
         uses: kentaro-m/auto-assign-action@v2.0.0
         with:
           repo-token: '${{ secrets.GITHUB_TOKEN }}'
           configuration-path: '.github/auto_assign_config.yml'
-          numberOfReviewers: ${{ steps.determine_reviewers.outputs.result }}
+          numberOfReviewers: ${{ steps.determine_reviewers.outputs.number_of_reviewers }}