diff --git a/lstm/characterGenImproved/requirements.txt b/lstm/characterGenImproved/requirements.txt
index 6957c59..f72efe1 100644
--- a/lstm/characterGenImproved/requirements.txt
+++ b/lstm/characterGenImproved/requirements.txt
@@ -96,7 +96,7 @@ lxml==3.3.5
 Markdown==2.6.8
 MarkupSafe==0.23
 matplotlib==2.0.2
-mistune==0.7.4
+mistune==0.8.1
 mock==2.0.0
 mpmath==0.19
 msgpack-python==0.4.8