diff --git a/requirements.txt b/requirements.txt
index d6d05a7..fa60583 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -65,7 +65,7 @@ jupyter-console==6.0.0
 jupyter-core==4.4.0
 kombu==4.6.3
 MarkupSafe==1.1.1
-mistune==0.8.4
+mistune==2.0.3
 murmurhash==1.0.2
 nbconvert==5.4.1
 nbformat==4.4.0