diff --git a/requirements.txt b/requirements.txt
index 3b009e7..480cdac 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -24,7 +24,7 @@ jupyterlab-server==1.1.5
 kiwisolver==1.2.0
 MarkupSafe==1.1.1
 matplotlib==3.2.2
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.6.1
 nbformat==5.0.7
 notebook==6.0.3