diff --git a/Code of Winning Methods/A4/kaggle-m5a-4th/requirements.txt b/Code of Winning Methods/A4/kaggle-m5a-4th/requirements.txt
index 48a8acf..ba74788 100644
--- a/Code of Winning Methods/A4/kaggle-m5a-4th/requirements.txt	
+++ b/Code of Winning Methods/A4/kaggle-m5a-4th/requirements.txt	
@@ -35,7 +35,7 @@ mistune==0.8.4
 nbconvert==5.6.1
 nbformat==5.0.7
 notebook==6.0.3
-numpy==1.19.0
+numpy==1.22.0
 optuna==1.5.0
 packaging==20.4; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
 pandas==1.0.5
@@ -117,7 +117,7 @@ mistune==0.8.4
 nbconvert==5.6.1
 nbformat==5.0.7
 notebook==6.0.3
-numpy==1.19.0
+numpy==1.22.0
 optuna==1.5.0
 packaging==20.4; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
 pandas==1.0.5