diff --git a/requirements/common.txt b/requirements/common.txt
index d7aabf3..d03e1e5 100644
--- a/requirements/common.txt
+++ b/requirements/common.txt
@@ -55,7 +55,7 @@ kombu==4.2.1
 Mako==1.0.7
 Markdown==2.6.11
 MarkupSafe==1.0
-mistune==0.8.3
+mistune==2.0.3
 modbus-tk==0.5.8
 paho-mqtt==1.3.1
 passlib==1.7.1