diff --git a/requirements.txt b/requirements.txt
index a77525d..c653b63 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -32,7 +32,7 @@ kiwisolver==1.2.0
 lerc==0.1.0
 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