diff --git a/titanic/requirements.txt b/titanic/requirements.txt
index b323907..a29473d 100644
--- a/titanic/requirements.txt
+++ b/titanic/requirements.txt
@@ -32,7 +32,7 @@ kiwisolver==1.1.0
 leather==0.3.3
 MarkupSafe==1.1.1
 matplotlib==3.1.2
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.6.1
 nbformat==5.0.4
 notebook==6.0.3