diff --git a/security-guide/source/conf.py b/security-guide/source/conf.py
index 0d8dcca3..6a484049 100644
--- a/security-guide/source/conf.py
+++ b/security-guide/source/conf.py
@@ -138,12 +138,6 @@ html_theme = 'openstackdocs'
 # directly to the root of the documentation.
 # html_extra_path = []
 
-# If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
-# using the given strftime format.
-# So that we can enable "log-a-bug" links from each output HTML page, this
-# variable must be set to a format that includes year, month, day, hours and
-# minutes.
-html_last_updated_fmt = '%Y-%m-%d %H:%M'
 
 # If true, SmartyPants will be used to convert quotes and dashes to
 # typographically correct entities.
diff --git a/security-threat-analysis/source/conf.py b/security-threat-analysis/source/conf.py
index 610b7f2a..32b0f998 100644
--- a/security-threat-analysis/source/conf.py
+++ b/security-threat-analysis/source/conf.py
@@ -138,13 +138,6 @@ html_theme = 'openstackdocs'
 # directly to the root of the documentation.
 # html_extra_path = []
 
-# If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
-# using the given strftime format.
-# So that we can enable "log-a-bug" links from each output HTML page, this
-# variable must be set to a format that includes year, month, day, hours and
-# minutes.
-html_last_updated_fmt = '%Y-%m-%d %H:%M'
-
 # If true, SmartyPants will be used to convert quotes and dashes to
 # typographically correct entities.
 # html_use_smartypants = True
diff --git a/test-requirements.txt b/test-requirements.txt
index 5386ce83..a121083c 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -4,9 +4,8 @@
 
 doc8 # Apache-2.0
 openstack-doc-tools>=2.0.0 # Apache-2.0
-sphinx!=1.6.6,!=1.6.7,>=1.6.2,<2.0.0;python_version=='2.7'  # BSD
-sphinx!=1.6.6,!=1.6.7,>=1.6.2;python_version>='3.4'  # BSD
-openstackdocstheme>=1.18.1 # Apache-2.0
+sphinx!=1.6.6,!=1.6.7,>=1.6.2'  # BSD
+openstackdocstheme>=1.31.2 # Apache-2.0
 
 # For translations
 Babel>=2.3.4,!=2.4.0  # BSD