diff --git a/requirements.txt b/requirements.txt
index bc50b3e..9eb2a2f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -38,7 +38,7 @@ kiwisolver==1.2.0
 lxml==4.5.0
 MarkupSafe==1.1.1
 matplotlib==3.2.1
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.6.1
 nbformat==5.0.4
 notebook==6.0.3