diff --git a/requirements.txt b/requirements.txt
index e9b4f07..9dd5d31 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ Jinja2==2.10.1
 lazy-object-proxy==1.4.3
 m2r==0.2.1
 MarkupSafe==1.1.1
-mistune==0.8.4
+mistune==2.0.3
 more-itertools==7.2.0
 numpy==1.17.2
 packaging==19.0