diff --git a/requirements.txt b/requirements.txt
index 0d2b199..cd5a5bc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ health-check==3.4.1
 idna==2.7
 jsonpointer==1.14
 jsonschema==3.1.1
-MarkupSafe==1.0
+MarkupSafe==1.1.1
 multidict==4.5.2
 psutil==5.6.3
 psycopg2-binary==2.8.4