diff --git a/.github/workflows/notify-pr-author-on-review.yml b/.github/workflows/notify-pr-author-on-review.yml
index d0efcbfb..9f60a07c 100644
--- a/.github/workflows/notify-pr-author-on-review.yml
+++ b/.github/workflows/notify-pr-author-on-review.yml
@@ -49,22 +49,10 @@ jobs:
 
       - name: Send Slack DM to PR Author
         if: steps.extract_info.outputs.skip != 'true'
-        env:
-          SLACK_BOT_TOKEN: ${{ secrets.SLACK_BOT_TOKEN }}
-          AUTHOR_SLACK_ID: ${{ steps.extract_info.outputs.author_slack_id }}
-          TEXT: ${{ steps.extract_info.outputs.text }}
-        run: |
-          RESPONSE=$(curl -s -X POST https://slack.com/api/chat.postMessage \
-            -H "Authorization: Bearer $SLACK_BOT_TOKEN" \
-            -H "Content-Type: application/json" \
-            -d '{
-              "channel": "'"$AUTHOR_SLACK_ID"'",
-              "text": "'"$TEXT"'"
-            }')
-
-          echo "Slack DM 전송 응답: $RESPONSE"
-
-          if ! echo "$RESPONSE" | jq -e '.ok' | grep -q true; then
-            echo "❌ Slack 메시지 전송 실패"
-            exit 1
-          fi
+        uses: slackapi/slack-github-action@v2.1.0
+        with:
+          method: chat.postMessage
+          token: ${{ secrets.SLACK_BOT_TOKEN }}
+          payload: |
+            channel: ${{ steps.extract_info.outputs.author_slack_id }}
+            text: ${{ steps.extract_info.outputs.text }}