diff --git a/requirements_all.txt b/requirements_all.txt
index da469e43dcd..c4366aaf0f5 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -4,7 +4,7 @@ pyyaml>=3.11,<4
 pytz>=2016.6.1
 pip>=7.0.0
 jinja2>=2.8
-voluptuous==0.8.9
+voluptuous==0.9.1
 typing>=3,<4
 sqlalchemy==1.0.14
 
diff --git a/setup.py b/setup.py
index 3d2d4b4e2c2..54867d5264e 100755
--- a/setup.py
+++ b/setup.py
@@ -16,7 +16,7 @@ REQUIRES = [
     'pytz>=2016.6.1',
     'pip>=7.0.0',
     'jinja2>=2.8',
-    'voluptuous==0.8.9',
+    'voluptuous==0.9.1',
     'typing>=3,<4',
     'sqlalchemy==1.0.14',
 ]