diff --git a/requirements.txt b/requirements.txt
index 7a30264..53ee821 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,7 +21,7 @@ jupyter-core==4.6.3
 kiwisolver==1.2.0
 MarkupSafe==1.1.1
 matplotlib==3.2.1
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.6.1
 nbformat==5.0.6
 notebook==6.0.3