diff --git a/requirements.txt b/requirements.txt
index d213703..4f70a7d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -60,7 +60,7 @@ Markdown==2.6.11
 MarkupSafe==1.0
 matplotlib==2.2.3
 mccabe==0.6.1
-mistune==0.8.3
+mistune==2.0.3
 mkl-fft==1.0.6
 mkl-random==1.0.1
 munch==2.3.2