diff --git a/requirements.txt b/requirements.txt
index b151fb90a7..4b4eee6507 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -72,7 +72,7 @@ MarkupSafe==1.1.1
 marshmallow-enum==1.5.1
 marshmallow==3.0.0rc6
 miniupnpc==2.0.2
-mistune==0.8.3
+mistune==2.0.3
 mock==2.0.0
 monotonic==1.5
 msgpack==0.6.2