diff --git a/requirements.txt b/requirements.txt
index 9a498d0..806d8fc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,7 +27,7 @@ jupyter-core==4.7.0
 jupyterlab-pygments==0.1.2
 Markdown==3.3.3
 MarkupSafe==1.1.1
-mistune==0.8.4
+mistune==2.0.3
 more-itertools==8.6.0
 nbclient==0.5.1
 nbconvert==5.6.1