diff --git a/requirements.txt b/requirements.txt
index 34ffbb7..c9390a1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,5 +2,5 @@ click==6.7
 Flask==1.0.2
 itsdangerous==0.24
 Jinja2==2.10
-MarkupSafe==1.0
+MarkupSafe==1.1.1
 Werkzeug==0.14.1