diff --git a/requirements.txt b/requirements.txt
index 58e5868..ccbd1b0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -43,7 +43,7 @@ MarkupSafe==2.0.1
 matplotlib==3.4.2
 matplotlib-inline==0.1.2
 mccabe==0.6.1
-mistune==0.8.4
+mistune==2.0.3
 nbclient==0.5.3
 nbconvert==6.0.7
 nbformat==5.1.3