diff --git a/upper-constraints.txt b/upper-constraints.txt
index efbefaa0..9a4ae39b 100644
--- a/upper-constraints.txt
+++ b/upper-constraints.txt
@@ -46,7 +46,7 @@ keystoneauth1===3.11.0
 kubernetes===10.0.1
 linecache2===1.0.0
 Mako===1.0.7
-MarkupSafe===1.0
+MarkupSafe===1.1.1
 monotonic===1.5
 morph===0.1.4
 msgpack===0.5.6