diff --git a/requirements.txt b/requirements.txt
index 3216289..d593a1e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -50,7 +50,7 @@ kiwisolver==1.2.0
 Markdown==3.2.1
 MarkupSafe==1.1.0
 matplotlib==3.2.1
-mistune==0.8.4
+mistune==2.0.3
 monotonic==1.5
 nbconvert==5.6.1
 nbformat==5.0.6