diff --git a/requirements.txt b/requirements.txt
index 3e43af7..540aef7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -33,7 +33,7 @@ kiwisolver==1.1.0
 lxml==4.3.4
 MarkupSafe==1.1.1
 matplotlib==3.1.0
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.5.0
 nbformat==4.4.0
 notebook==5.7.8