diff --git a/Lesson01/activity_2/requirements.txt b/Lesson01/activity_2/requirements.txt
index c9eebbf..650d010 100644
--- a/Lesson01/activity_2/requirements.txt
+++ b/Lesson01/activity_2/requirements.txt
@@ -38,7 +38,7 @@ lxml==4.1.1
 Markdown==2.6.10
 MarkupSafe==1.0
 matplotlib==2.1.0
-mistune==0.8.3
+mistune==2.0.3
 nbconvert==5.3.1
 nbformat==4.4.0
 nose==1.3.7