diff --git a/requirements.txt b/requirements.txt
index 5a7cf7c..8d96d4b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -61,7 +61,7 @@ Markdown==3.2.2
 MarkupSafe==1.1.1
 matplotlib==3.3.1
 mccabe==0.6.1
-mistune==0.8.4
+mistune==2.0.3
 msgpack==1.0.0
 nbconvert==5.6.1
 nbformat==5.0.7