diff --git a/requirements.txt b/requirements.txt
index 8850047..6999e53 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,7 +27,7 @@ jupyter-core==4.7.1
 jupyterlab-pygments==0.1.2
 jupyterlab-widgets==1.0.0
 MarkupSafe==1.1.1
-mistune==0.8.4
+mistune==2.0.3
 nbclient==0.5.3
 nbconvert==6.0.7
 nbformat==5.1.2