diff --git a/requirements.txt b/requirements.txt
index ae90612..52acdb2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,7 +28,7 @@ jupyter-console==5.2.0
 jupyter-core==4.4.0
 MarkupSafe==1.0
 matplotlib==2.1.2
-mistune==0.8.3
+mistune==2.0.3
 mkl-fft==1.0.4
 mkl-random==1.0.1
 nbconvert==5.3.1