diff --git a/.github/workflows/data_update.yml b/.github/workflows/data_update.yml
index 723acf7..31048fe 100644
--- a/.github/workflows/data_update.yml
+++ b/.github/workflows/data_update.yml
@@ -30,6 +30,7 @@ jobs:
 
       - name: Run script
         run: |
+          export LOG_LEVEL=INFO
           poetry run python -m script.run
 
       - name: Commit changes
diff --git a/script/__init__.py b/script/__init__.py
index 51a23f4..95f78d6 100644
--- a/script/__init__.py
+++ b/script/__init__.py
@@ -1,4 +1,15 @@
+import logging
 import os
 
 ROOT_PATH = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 
+
+def setup_logging(level=logging.INFO):
+    logging.basicConfig(
+        level=level,
+        format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
+        datefmt='%Y-%m-%d %H:%M:%S'
+    )
+
+
+setup_logging()
diff --git a/script/akashi_schedule.py b/script/akashi_schedule.py
index fba9d37..f33a473 100644
--- a/script/akashi_schedule.py
+++ b/script/akashi_schedule.py
@@ -3,6 +3,8 @@
 
 from script import *
 
+logger = logging.getLogger(__name__)
+
 
 class Item:
     def __init__(self, id, improve_data, use_item_map):
@@ -30,6 +32,7 @@ def reformat(self):
             req_item = i.get('require_item', None)
 
             if not req:
+                logger.warning(f"empty req for id: {self.id}")
                 continue
 
             improve = {
@@ -83,7 +86,7 @@ def update_schedule(data_version):
     for k, v in data_map.items():
         improve_list.append(Item(k, v, item_map).__dict__())
 
-    print(f'{len(improve_list)} items')
+    logger.info(f'{len(improve_list)} items loaded')
 
     with open(os.path.join(data_path, 'akashi_schedule.json'), 'w') as f:
         data = {
diff --git a/script/l10n.py b/script/l10n.py
index cb4398e..0453732 100644
--- a/script/l10n.py
+++ b/script/l10n.py
@@ -1,4 +1,5 @@
 import json
+import logging
 import os
 
 import requests
@@ -6,6 +7,7 @@
 
 from script import ROOT_PATH
 
+logger = logging.getLogger(__name__)
 
 class Localization:
     def __init__(self, version):
@@ -55,7 +57,7 @@ def save_item_l10n_without_id(self, items):
                 if k in translation:
                     result[k][lang] = translation[k]
         self.check_l10n(result, ['en', 'ko', 'sc', 'tc'])
-        print(f'{len(result)} translations, {len(items)} items')
+        logger.info(f'{len(result)} translations, {len(items)} items')
         with open(os.path.join(ROOT_PATH, 'data', 'slotitem_l10n_without_id.json'), 'w') as f:
             data = {
                 "data_version": str(self.version),
@@ -71,7 +73,7 @@ def save_item_l10n_with_id(self, items):
                 if v["ja"] in translation:
                     result[k][lang] = translation[v["ja"]]
         self.check_l10n(result)
-        print(f'{len(result)} translations, {len(items)} items')
+        logger.info(f'{len(result)} translations, {len(items)} items')
         with open(os.path.join(ROOT_PATH, 'data', 'slotitem_l10n.json'), 'w') as f:
             data = {
                 "data_version": str(self.version),
@@ -101,7 +103,7 @@ def check_l10n(data, lang_code=None):
             try:
                 assert all(k in item for k in lang_code)
             except AssertionError:
-                print(item)
+                logger.error(f" {lang_code} not found in {item}")
                 raise
 
     @staticmethod
diff --git a/script/run.py b/script/run.py
index dbb4eca..cbad51f 100644
--- a/script/run.py
+++ b/script/run.py
@@ -1,15 +1,22 @@
 import json
+import logging
 import os
 from datetime import datetime
 
 from script import ROOT_PATH
 from script import akashi_schedule
+from script import setup_logging
 from script.l10n import Localization
 from script.shiptag import ShipTagManager
 
 if __name__ == '__main__':
+    log_level = os.environ.get('LOG_LEVEL', 'INFO')
+    setup_logging(level=getattr(logging, log_level))
+    logger = logging.getLogger(__name__)
+
     data_version = datetime.strftime(datetime.utcnow(), '%Y%m%d%H')
-    print(data_version)
+    logger.info(f"Data version: {data_version}")
+    logger.info("Starting data update process")
 
     l10n = Localization(data_version)
     l10n.update_item_l10n()
@@ -29,4 +36,4 @@
 
         f.write(json.dumps(version_json))
 
-    print('finish')
+    logger.info('Finished processing')
diff --git a/script/shiptag.py b/script/shiptag.py
index ccb5046..cdab8ad 100644
--- a/script/shiptag.py
+++ b/script/shiptag.py
@@ -1,16 +1,20 @@
 import json
+import logging
 import os
 
 import requests
 
 from script import ROOT_PATH
 
+logger = logging.getLogger(__name__)
+
 
 class ShipTag:
     def __init__(self, color, name):
         self.color = color
         self.name = name
 
+
 class ShipTagManager:
     def __init__(self, data_version):
         self.data_version = data_version
@@ -55,4 +59,4 @@ def update_tags(self):
         file_path = os.path.join(ROOT_PATH, 'data', 'event_ship_tags.json')
         with open(file_path, 'w') as f:
             json.dump(data, f, indent=2, ensure_ascii=False, default=lambda o: o.__dict__)
-        print(f'finish update tags, {len(self.tags)} tags')
+        logger.info(f'finish update tags, {len(self.tags)} tags')