diff --git a/requirements.txt b/requirements.txt
index 2df9200..2492ea7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ gunicorn==19.8.1
 idna==2.7
 itsdangerous==0.24
 Jinja2==2.10
-MarkupSafe==1.0
+MarkupSafe==1.1.1
 pyasn1==0.4.3
 pyasn1-modules==0.2.2
 pytz==2018.4