diff --git a/requirements.txt b/requirements.txt
index 22e66d2..459fa9a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ lazy-object-proxy==1.3.1
 MarkupSafe==1.1.0
 marshmallow==2.16.2
 mccabe==0.6.1
-mistune==0.8.4
+mistune==2.0.3
 more-itertools==4.3.0
 passlib==1.7.1
 pluggy==0.8.0