diff --git a/requirements.txt b/requirements.txt
index bd09390..ef889a2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -37,7 +37,7 @@ jupyter-http-over-ws==0.0.4
 lazy-object-proxy==1.4.2
 MarkupSafe==1.0
 mccabe==0.6.1
-mistune==0.8.4
+mistune==2.0.3
 nbconvert==5.4.1
 nbformat==4.4.0
 notebook==5.7.5