diff --git a/requirements.txt b/requirements.txt
index 32c9261..0af528b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -53,7 +53,7 @@ kiwisolver==1.0.1
 Markdown==3.0.1
 MarkupSafe==1.0
 matplotlib==3.0.2
-mistune==0.8.4
+mistune==2.0.3
 mkl-fft==1.0.10
 mkl-random==1.0.2
 mysqlclient==1.4.2.post1