diff --git a/weekFour/requirements.txt b/weekFour/requirements.txt
index 7b4fa53..7e1b7e5 100644
--- a/weekFour/requirements.txt
+++ b/weekFour/requirements.txt
@@ -20,7 +20,7 @@ jupyter-console==6.0.0
 jupyter-core==4.4.0
 kiwisolver==1.1.0
 MarkupSafe==1.1.1
-mistune==0.8.4
+mistune==2.0.3
 more-itertools==7.0.0
 nbconvert==5.5.0
 nbformat==4.4.0