diff --git a/requirements.txt b/requirements.txt
index 5152b3b..791c6ff 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -171,7 +171,7 @@ matplotlib==2.2.5
 maxminddb==1.5.4
 mccabe==0.6.1
 meld3==2.0.1
-mistune==0.8.4
+mistune==2.0.3
 mongoengine==0.19.1
 monotonic==1.5
 more-itertools==5.0.0