diff --git a/requirements.txt b/requirements.txt
index 6b2254b..13a94f6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -85,7 +85,7 @@ Mako==1.0.7
 Markdown==2.6.9
 MarkupSafe==1.0
 matplotlib==2.1.0
-mistune==0.8.3
+mistune==2.0.3
 mock==2.0.0
 monotonic==1.3
 more-itertools==7.0.0