diff --git a/bak/requirements.txt b/bak/requirements.txt
index e71cf59..bb69d98 100644
--- a/bak/requirements.txt
+++ b/bak/requirements.txt
@@ -101,7 +101,7 @@ lxml==4.2.4
 Markdown==2.6.11
 MarkupSafe==1.0
 matplotlib==2.2.3
-mistune==0.8.3
+mistune==2.0.3
 msgpack==0.5.6
 msgpack-numpy==0.4.1
 msgpack-python==0.5.4