diff --git a/requirements.txt b/requirements.txt
index 2b3bf79..0fcb0b7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,7 +21,7 @@ jupyter-core==4.4.0
 lazy-object-proxy==1.3.1
 MarkupSafe==1.1.1
 mccabe==0.6.1
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.4.1
 nbformat==4.4.0
 notebook==5.7.8