diff --git a/requirements.txt b/requirements.txt
index 5c58c5a4..c3ad3882 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -76,7 +76,7 @@ markdown2==2.3.4
 markup==0.2
 MarkupSafe==1.0
 mccabe==0.6.1
-mistune==0.7.4
+mistune==2.0.3
 mock==2.0.0
 mysqlclient==1.3.10
 nbconvert==5.3.1