diff --git a/requirements.txt b/requirements.txt
index 0e174f7..6042f06 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -61,7 +61,7 @@ lxml==4.2.4
 MarkupSafe==1.0
 matplotlib==2.2.3
 mccabe==0.6.1
-mistune==0.8.3
+mistune==2.0.3
 
 mpmath==1.0.0
 msgpack==0.6.1