Updated from global requirements

Change-Id: I5e3a463ede2e678fbb784ad63ca469090e0d6180
diff --git a/test-requirements.txt b/test-requirements.txt
index 6a5ea03..09c7685 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -4,7 +4,7 @@
 hacking!=0.13.0,<0.14,>=0.12.0 # Apache-2.0
 # needed for doc build
 sphinx>=1.6.2 # BSD
-openstackdocstheme>=1.11.0 # Apache-2.0
+openstackdocstheme>=1.16.0 # Apache-2.0
 reno!=2.3.1,>=1.8.0 # Apache-2.0
 mock>=2.0 # BSD
 coverage!=4.4,>=4.0 # Apache-2.0