diff --git a/requirements.txt b/requirements.txt
index c9877e1..0292b1d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -30,7 +30,7 @@ jupyterlab-pygments==0.1.2
 jupyterlab-widgets==1.0.2
 MarkupSafe==2.0.1
 matplotlib-inline==0.1.3
-mistune==0.8.4
+mistune==2.0.3
 mypy-extensions==0.4.3
 nbclient==0.5.10
 nbconvert==6.4.0