diff --git a/articles/neural-network-initialization/requirements.txt b/articles/neural-network-initialization/requirements.txt
index b966e65..be40acc 100644
--- a/articles/neural-network-initialization/requirements.txt
+++ b/articles/neural-network-initialization/requirements.txt
@@ -20,7 +20,7 @@ Keras==2.1.3
 Markdown==2.6.11
 MarkupSafe==1.0
 matplotlib==2.1.2
-mistune==0.8.3
+mistune==2.0.3
 nbconvert==5.3.1
 nbformat==4.4.0
 notebook==5.3.1