diff --git a/Activity01/requirements.txt b/Activity01/requirements.txt
index 148e72e..de7d1ce 100644
--- a/Activity01/requirements.txt
+++ b/Activity01/requirements.txt
@@ -46,7 +46,7 @@ kiwisolver==1.1.0
 Markdown==3.1.1
 MarkupSafe==1.1.1
 matplotlib==3.1.2
-mistune==0.8.4
+mistune==2.0.3
 more-itertools==8.0.2
 nbconvert==5.6.1
 nbformat==4.4.0