diff --git a/requirements.txt b/requirements.txt
index da9ce15..3a5dc33 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ jupyter-console==4.1.1
 jupyter-core==4.1.0
 keepalive==0.5
 MarkupSafe==0.23
-mistune==0.8.1
+mistune==2.0.3
 nbconvert==4.2.0
 nbformat==4.0.1
 notebook==5.7.8