diff --git a/requirements.txt b/requirements.txt
index 410dc2c..48edff9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ jupyter-client==4.4.0
 jupyter-core==4.2.1
 Markdown==2.6.8
 MarkupSafe==0.23
-mistune==0.7.3
+mistune==0.8.1
 nbconvert==5.1.1
 nbformat==4.2.0
 notebook==4.4.1