diff --git a/requirements.txt b/requirements.txt
index 8cbbadc..4cee0b2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,7 +36,7 @@ jupyter-core==4.3.0
 Keras==2.1.1
 lxml==4.1.1
 MarkupSafe==1.0
-mistune==0.7.4
+mistune==2.0.3
 nbconvert==5.3.1
 nbformat==4.4.0
 notebook==5.7.8