diff --git a/requirements.txt b/requirements.txt
index 90d5382..c7720ae 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -62,7 +62,7 @@ Markdown==3.0.1
 MarkupSafe==1.0
 maya==0.5.0
 mccabe==0.6.1
-mistune==0.8.3
+mistune==2.0.3
 mnist==0.2.1
 msgpack==0.5.6
 msgpack-numpy==0.4.4.1