diff --git a/requirements.txt b/requirements.txt
index b311218..dca4991 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -29,7 +29,7 @@ keyring==15.1.0
 keyrings.alt==3.1
 language-selector==0.1
 MarkupSafe==1.1.0
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.4.0
 nbformat==4.4.0
 netifaces==0.10.4