diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 3b1443b..978e4d1 100755
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -7,7 +7,7 @@ on:
 env:
   AWS_REGION: ap-northeast-2
   ECR_REPOSITORY: imfact-inferer
-  IMAGE_TAG: latest
+  IMAGE_TAG: dev
   AWS_ACCOUNT_ID: ${{ secrets.AWS_ACCOUNT_ID }}
 
 jobs:
diff --git a/imfact_batch_infer.py b/imfact_batch_infer.py
index f8e24e3..d2f16a1 100644
--- a/imfact_batch_infer.py
+++ b/imfact_batch_infer.py
@@ -5,6 +5,7 @@
 from concurrent.futures import ThreadPoolExecutor
 import boto3
 from tqdm import tqdm
+from typing import Any, Dict
 
 from imfact_infer import ImFactInferer
 
@@ -29,7 +30,7 @@ def init_inferer():
     return _inferer
 
 
-def process_single_article(article: dict):
+def process_single_article(article: Dict[str, Any]) -> Dict[str, Any]:
     inferer = init_inferer()
     result = inferer.compute_news_reliability(article["title"], article["body"])
     article["reliability_score"] = result["final_score"]