diff --git a/requirements.txt b/requirements.txt
index 03c51a7..a7a700e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,7 +22,7 @@ jupyter-client==5.3.1
 jupyter-console==5.2.0
 jupyter-core==4.5.0
 MarkupSafe==1.1.1
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.6.0
 nbformat==4.4.0
 notebook==5.7.8