diff --git a/requirements.txt b/requirements.txt
index 58da3c9..a43e748 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -30,7 +30,7 @@ jupyter==1.0.0
 kiwisolver==1.0.1
 markupsafe==1.0
 matplotlib==2.2.2
-mistune==0.8.3
+mistune==2.0.3
 multitasking==0.0.7
 nbconvert==5.3.1
 nbformat==4.4.0