diff --git a/requirements.txt b/requirements.txt
index bbf9642..b72d3fa 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -48,7 +48,7 @@ Mako==1.0.7
 MarkupSafe==1.1.0
 matplotlib==3.1.0
 mecab-python===0.996-ko-0.9.2
-mistune==0.8.4
+mistune==2.0.3
 msgpack-python==0.5.6
 nbconvert==5.5.0
 nbformat==4.4.0