diff --git a/requirements.txt b/requirements.txt
index 2884510..0b95d4c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -45,7 +45,7 @@ lxml==4.4.1
 Markdown==3.2.1
 MarkupSafe==2.0.1
 matplotlib==3.1.1
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.6.1
 nbformat==5.0.5
 notebook==6.0.3