diff --git a/requirements.txt b/requirements.txt
index ee7cd30..0f80347 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -50,7 +50,7 @@ kombu==3.0.37
 Markdown==3.2.1
 MarkupSafe==1.1.1
 matplotlib==3.2.0
-mistune==0.8.4
+mistune==2.0.3
 multidict==4.7.5
 mysqlclient==1.4.6
 nb-conda==2.2.1