diff --git a/requirements.txt b/requirements.txt
index 3c161b2..c1cf37f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -29,7 +29,7 @@ jupyter-console==5.2.0
 jupyter-core==4.3.0
 MarkupSafe==1.0
 matplotlib==2.0.2
-mistune==0.7.4
+mistune==0.8.1
 mongoengine==0.10.7
 nbconvert==5.3.1
 nbformat==4.4.0