diff --git a/requirements.txt b/requirements.txt
index b3b133e..bc32e77 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,7 +28,7 @@ Jinja2==2.11.3
 joblib==1.0.0
 jsonschema==3.2.0
 MarkupSafe==1.1.1
-mistune==0.8.4
+mistune==2.0.3
 murmurhash==1.0.5
 nbclient==0.5.1
 nbconvert==6.0.7