diff --git a/python_requirements.txt b/python_requirements.txt
index a668bd1..ec98927 100644
--- a/python_requirements.txt
+++ b/python_requirements.txt
@@ -89,7 +89,7 @@ MarkupSafe==1.1.0
 matplotlib==3.0.2
 mccabe==0.6.1
 menuinst==1.4.14
-mistune==0.8.4
+mistune==2.0.3
 mkl-fft==1.0.6
 mkl-random==1.0.2
 mock==3.0.5