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..76b6702 100644
--- a/Code of Winning Methods/A4/kaggle-m5a-4th/requirements.txt	
+++ b/Code of Winning Methods/A4/kaggle-m5a-4th/requirements.txt	
@@ -31,7 +31,7 @@ lightgbm==2.3.1
 mako==1.1.3
 markupsafe==1.1.1
 matplotlib==3.2.2
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.6.1
 nbformat==5.0.7
 notebook==6.0.3
@@ -113,7 +113,7 @@ lightgbm==2.3.1
 mako==1.1.3
 markupsafe==1.1.1
 matplotlib==3.2.2
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.6.1
 nbformat==5.0.7
 notebook==6.0.3