diff --git a/requirements.txt b/requirements.txt
index 6bcc97d..d4b216e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -35,7 +35,7 @@ llvmlite==0.31.0
 Markdown==3.2
 MarkupSafe==1.1.1
 matplotlib==3.1.3
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.6.1
 nbformat==5.0.4
 notebook==6.0.3