diff --git a/requirements.txt b/requirements.txt
index 38f7c74..015bc71 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -40,7 +40,7 @@ lxml==4.5.1
 Markdown==3.2.2
 MarkupSafe==1.1.1
 mecab-python @ file:///tmp/mecab-python-0.996
-mistune==0.8.4
+mistune==2.0.3
 mxnet-cu101==1.6.0
 nbconvert==5.6.1
 nbformat==5.0.6