diff --git a/submission/requirements.txt b/submission/requirements.txt
index 1201ad7..3ff0d90 100644
--- a/submission/requirements.txt
+++ b/submission/requirements.txt
@@ -78,7 +78,7 @@ MarkupSafe==1.0
 matplotlib==2.0.2
 mccabe==0.6.1
 menuinst==1.4.8
-mistune==0.7.4
+mistune==0.8.1
 mpmath==0.19
 msgpack-python==0.4.8
 multipledispatch==0.4.9