diff --git a/requirements.txt b/requirements.txt
index f84b1438..97483989 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -40,7 +40,7 @@ kiwisolver==1.0.1
 lxml==4.3.0
 MarkupSafe==1.1.0
 matplotlib==2.2.3
-mistune==0.8.4
+mistune==2.0.3
 msgpack==0.6.0
 msgpack-python==0.5.6
 munch==2.3.2