diff --git a/requirements.txt b/requirements.txt
index 50fbb9e..ffbcf17 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ Flask==1.0.2
 idna==2.7
 itsdangerous==0.24
 Jinja2==2.10
-MarkupSafe==1.0
+MarkupSafe==1.1.1
 requests==2.19.1
 urllib3==1.23
 Werkzeug==0.14.1