diff --git a/.github/workflows/lotto-buy.yml b/.github/workflows/lotto-buy.yml
index fa9a967..5589a40 100644
--- a/.github/workflows/lotto-buy.yml
+++ b/.github/workflows/lotto-buy.yml
@@ -78,11 +78,12 @@ jobs:
         uses: browser-actions/setup-chrome@v1
         with:
           install-dependencies: true
-          install-driver: true
+          install-chromedriver: true
 
       - name: Chrome 확인
         run: |
           "${{ steps.setup-chrome.outputs.chrome-path }}" --version
+          "${{ steps.setup-chrome.outputs.chromedriver-path }}" --version
 
       - name: 로또 구매 실행
         env:
@@ -91,4 +92,5 @@ jobs:
           TELEGRAM_BOT_TOKEN: ${{ secrets.TELEGRAM_BOT_TOKEN }}
           TELEGRAM_CHAT_ID: ${{ secrets.TELEGRAM_CHAT_ID }}
           CHROME_BIN: ${{ steps.setup-chrome.outputs.chrome-path }}
+          CHROMEDRIVER_PATH: ${{ steps.setup-chrome.outputs.chromedriver-path }}
         run: .venv/bin/python3 lotto-runner/lotto_auto_buy.py
diff --git a/lotto-runner/lotto_auto_buy.py b/lotto-runner/lotto_auto_buy.py
index 65b13b7..205c2c7 100644
--- a/lotto-runner/lotto_auto_buy.py
+++ b/lotto-runner/lotto_auto_buy.py
@@ -19,6 +19,9 @@ import tempfile
 import urllib.request
 from datetime import datetime
 
+# 로그 디렉토리는 CI/로컬 어디서든 보장
+os.makedirs("logs", exist_ok=True)
+
 # .env 파일 자동 로드
 try:
     from dotenv import load_dotenv
@@ -89,7 +92,10 @@ def create_driver():
     options.add_experimental_option("excludeSwitches", ["enable-automation"])
     options.add_experimental_option("useAutomationExtension", False)
 
-    driver = webdriver.Chrome(options=options)
+    chromedriver_path = os.environ.get("CHROMEDRIVER_PATH", "")
+    service = Service(executable_path=chromedriver_path) if chromedriver_path else None
+
+    driver = webdriver.Chrome(service=service, options=options)
     # 종료 시 정리할 수 있도록 임시 프로필 경로 저장
     driver._chrome_user_data_dir = chrome_user_data_dir
     driver._chrome_user_data_dir_auto_created = auto_created_profile
diff --git a/lotto-runner/requirements.txt b/lotto-runner/requirements.txt
index c6ffdf1..d2c5735 100644
--- a/lotto-runner/requirements.txt
+++ b/lotto-runner/requirements.txt
@@ -1,2 +1,2 @@
-selenium
+selenium>=4.6.0
 python-dotenv