diff --git a/lower-constraints.txt b/lower-constraints.txt
index 8a89092..dc8c2c9 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -86,7 +86,7 @@ pymongo==3.0.2
 pyOpenSSL==17.1.0
 pyparsing==2.1.0
 pyperclip==1.5.27
-pyScss==1.3.4
+pyScss==1.3.7
 python-cinderclient==5.0.0
 python-dateutil==2.5.3
 python-glanceclient==2.8.0