diff --git a/requirements.txt b/requirements.txt
index 3a76100..b401f68 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -26,7 +26,7 @@ jupyter-core==4.3.0
 MarkupSafe==1.0
 matplotlib==2.1.0
 mccabe==0.6.1
-mistune==0.7.4
+mistune==0.8.1
 nbconvert==5.2.1
 nbformat==4.3.0
 notebook==5.0.0