diff --git a/requirements-registration.txt b/requirements-registration.txt
index 46e29b1..60f901a 100644
--- a/requirements-registration.txt
+++ b/requirements-registration.txt
@@ -31,7 +31,7 @@ jupyter-console==5.2.0
 jupyter-core==4.3.0
 Markdown==2.6.9
 MarkupSafe==1.0
-mistune==0.7.4
+mistune==0.8.1
 nbconvert==5.2.1
 nbformat==4.4.0
 notebook==5.0.0