diff --git a/requirements.txt b/requirements.txt
index 2ff1e73..c2769c1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -32,7 +32,7 @@ jupyterlab-pygments==0.2.2
 jupyterlab-widgets==1.1.0
 MarkupSafe==2.1.1
 matplotlib-inline==0.1.3
-mistune==0.8.4
+mistune==2.0.3
 nbclient==0.6.0
 nbconvert==6.5.0
 nbformat==5.3.0