diff --git a/requirements.txt b/requirements.txt
index efbc3a7..ed00c40 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -29,7 +29,7 @@ kiwisolver==1.0.1
 Markdown==3.0.1
 MarkupSafe==1.0
 matplotlib==3.0.2
-mistune==0.8.3
+mistune==2.0.3
 nbconvert==5.4.0
 nbformat==4.4.0
 notebook==5.7.0