diff --git a/requirements.txt b/requirements.txt
index e8858e9..b659e65 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -61,7 +61,7 @@ lxml==4.0.0
 Markdown==2.6.11
 MarkupSafe==1.0
 matplotlib==2.1.0
-mistune==0.8
+mistune==2.0.3
 more-itertools==3.2.0
 nameparser==0.5.3
 nbconvert==5.3.1