diff --git a/requirements.txt b/requirements.txt
index 7cc3b66..2b08df6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -91,7 +91,7 @@ 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
 mkl-random
 more-itertools==4.1.0