diff --git a/requirements.txt b/requirements.txt
index 7ab53d5..20663cf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,7 +22,7 @@ jupyter-console==6.1.0
 jupyter-core==4.6.2
 MarkupSafe==1.1.1
 mccabe==0.6.1
-mistune==0.8.4
+mistune==2.0.3
 mypy==0.761
 mypy-extensions==0.4.3
 nbconvert==5.6.1