diff --git a/requirement.txt b/requirement.txt
index 42e25c1..a12b92e 100644
--- a/requirement.txt
+++ b/requirement.txt
@@ -145,7 +145,7 @@ LEPL==5.1.3
 Markdown==2.6.11
 MarkupSafe==1.0
 matplotlib==2.2.2
-mistune==0.8.3
+mistune==2.0.3
 mock==2.0.0
 msgpack==0.5.6
 msgpack-numpy==0.4.3.1