diff --git a/requirements.txt b/requirements.txt
index 89e691c..4a05c8a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -33,7 +33,7 @@ kiwisolver==1.0.1
 lxml==4.2.5
 MarkupSafe==1.0
 matplotlib==3.0.1
-mistune==0.8.4
+mistune==2.0.3
 msgpack==0.5.6
 msgpack-numpy==0.4.3.2
 murmurhash==1.0.1