diff --git a/code/requirements.txt b/code/requirements.txt
index e25d6c1..932f542 100644
--- a/code/requirements.txt
+++ b/code/requirements.txt
@@ -77,7 +77,7 @@ 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