diff --git a/requirements.txt b/requirements.txt
index 97a4a50..4603b41 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -60,7 +60,7 @@ lxml==4.6.3
 MarkupSafe==2.0.1
 matplotlib==3.4.3
 matplotlib-inline==0.1.3
-mistune==0.8.4
+mistune==2.0.3
 msgpack==1.0.2
 nbclient==0.5.4
 nbconvert==6.2.0