diff --git a/requirements.txt b/requirements.txt
index 571b4d7..24d9f31 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -58,7 +58,7 @@ lxml==4.3.0
 Markdown==2.6.11
 MarkupSafe==1.0
 matplotlib==2.2.2
-mistune==0.8.3
+mistune==2.0.3
 #mkl-fft==1.0.0
 #mkl-random==1.0.1
 more-itertools==4.1.0