diff --git a/requirements.txt b/requirements.txt
index 02ea2fb..2794112 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -68,7 +68,7 @@ master-discovery-fkie==0.8.12
 master-sync-fkie==0.8.12
 matplotlib==3.2.1
 message-filters==1.12.14
-mistune==0.8.4
+mistune==2.0.3
 moveit-commander==0.9.18
 moveit-ros-planning-interface==0.9.18
 moveit-ros-visualization==0.9.18