diff --git a/requirements.txt b/requirements.txt
index 0e9782f..48cbdbe 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -58,7 +58,7 @@ lxml==4.1.1
 Mako==1.0.7
 MarkupSafe==1.0
 matplotlib==2.2.2
-mistune==0.8.4
+mistune==2.0.3
 multidict==4.1.0
 multipledispatch==0.4.9
 nbconvert==5.5.0