diff --git a/requirements.txt b/requirements.txt
index b6bf6e0b1..c2ff05c5c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -29,7 +29,7 @@ jupyterlab==2.1.0
 jupyterlab-server==1.1.1
 MarkupSafe==1.1.1
 mccabe==0.6.1
-mistune==0.8.4
+mistune==2.0.3
 more-itertools==8.2.0
 nbconvert==5.6.1
 nbformat==5.0.5