diff --git a/requirements.txt b/requirements.txt
index 95aa8c9..1d5d510 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,7 +36,7 @@ lxml==4.2.5
 Markdown==2.6.11
 MarkupSafe==1.0
 matplotlib==2.2.3
-mistune==0.8.3
+mistune==2.0.3
 mlxtend==0.15.0.0
 more-itertools==4.3.0
 nbconvert==5.3.1