diff --git a/notebook/requirements.txt b/notebook/requirements.txt
index 3375307..2f21855 100644
--- a/notebook/requirements.txt
+++ b/notebook/requirements.txt
@@ -28,7 +28,7 @@ lazy-object-proxy==1.4.3
 MarkupSafe==1.1.1
 matplotlib==3.2.1
 mccabe==0.6.1
-mistune==0.8.4
+mistune==2.0.3
 more-itertools==8.3.0
 nbconvert==5.6.1
 nbformat==5.0.4