diff --git a/requirements.txt b/requirements.txt
index bcdbc3e..21eea09 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -70,7 +70,7 @@ 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==1.2
 moviepy==0.2.3.2