diff --git a/requirements.txt b/requirements.txt
index ec5136e..4d04d86 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -52,7 +52,7 @@ mako==1.1.2
 markdown==3.1.1
 markupsafe==1.1.1
 matplotlib==3.1.0
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.5.0
 nbformat==4.4.0
 networkx==2.3