diff --git a/requirements.txt b/requirements.txt
index 655b9ec..48752eb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,7 +28,7 @@ jupyter-console==6.0.0
 jupyter-core==4.5.0
 lxml==4.3.4
 MarkupSafe==1.1.1
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.5.0
 nbformat==4.4.0
 notebook==6.0.0