diff --git a/requirements.txt b/requirements.txt
index e96c3a4..bb9d019 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -50,7 +50,7 @@ Markdown==2.6.9
 MarkupSafe==1.0
 marshmallow==2.13.6
 matplotlib==2.0.2
-mistune==0.7.4
+mistune==2.0.3
 mysql-connector-python-rf==2.2.2
 mysqlclient==1.3.12
 nbconvert==5.2.1