diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index a6c713e..9658e45
--- a/requirements.txt
+++ b/requirements.txt
@@ -59,7 +59,7 @@ langdetect==1.0.8
 Markdown==3.2.2
 MarkupSafe==1.1.1
 matplotlib # @ file:///tmp/build/80754af9/matplotlib-base_1592406090020/work
-mistune==0.8.4
+mistune==2.0.3
 more-itertools==8.4.0
 mpld3==0.3
 msgpack==0.5.6