diff --git a/requirements.txt b/requirements.txt
index 7de40e0..dba2b92 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -39,7 +39,7 @@ kiwisolver==1.1.0
 langdetect==1.0.8
 MarkupSafe==1.1.1
 matplotlib==3.2.0
-mistune==0.8.4
+mistune==2.0.3
 more-itertools==8.2.0
 mpld3==0.3
 nbconvert==5.6.1