diff --git a/requirements.txt b/requirements.txt
index 41a360d..43af3e1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -44,7 +44,7 @@ lazy-object-proxy==1.4.3
 lxml==4.5.0
 MarkupSafe==1.1.1
 mccabe==0.6.1
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.6.1
 nbformat==5.0.6
 notebook==6.0.3