diff --git a/requirements.txt b/requirements.txt
index 4f72146..39222dd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -63,7 +63,7 @@ Mako==1.1.0
 Markdown==3.1.1
 MarkupSafe==1.1.1
 matplotlib==3.2.1
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.6.1
 nbformat==5.0.6
 networkx==2.4