diff --git a/requirements.txt b/requirements.txt
index ca6dd58..4b80a39 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,7 +27,7 @@ jupyter-console==6.0.0
 jupyter-core==4.4.0
 lxml==4.3.0
 MarkupSafe==1.1.0
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.4.0
 nbformat==4.4.0
 notebook==5.7.4