diff --git a/jupyter_demo/requirements.txt b/jupyter_demo/requirements.txt
index d1f0d1e..d3e7a85 100644
--- a/jupyter_demo/requirements.txt
+++ b/jupyter_demo/requirements.txt
@@ -18,7 +18,7 @@ jupyter-client==5.2.4
 jupyter-console==6.0.0
 jupyter-core==4.4.0
 MarkupSafe==1.1.0
-mistune==0.8.4
+mistune==2.0.3
 mwoauth==0.3.2
 nbconvert==5.4.0
 nbformat==4.4.0