diff --git a/requirements.txt b/requirements.txt
index 57927fb..276bccf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ jsonschema==2.6.0
 jupyter-client==5.2.3
 jupyter-core==4.4.0
 MarkupSafe==1.0
-mistune==0.8.4
+mistune==2.0.3
 msgpack==0.5.6
 msgpack-numpy==0.4.3.2
 murmurhash==1.0.1