diff --git a/doc/source/conf.py b/doc/source/conf.py
index 9ac6887c2..8eaa340f5 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -12,11 +12,19 @@ sys.path.insert(0, os.path.abspath('../..'))
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
 extensions = [
     'sphinx.ext.autodoc',
-    'oslosphinx',
+    'openstackdocstheme',
     'stevedore.sphinxext',
     'oslo_config.sphinxext',
 ]
 
+# openstackdocstheme options
+repository_name = 'openstack/oslo.messaging'
+bug_project = 'oslo.messaging'
+bug_tag = ''
+
+# Must set this variable to include year, month, day, hours, and minutes.
+html_last_updated_fmt = '%Y-%m-%d %H:%M'
+
 # autodoc generation is a bit aggressive and a nuisance when doing heavy
 # text edit cycles.
 # execute "export SPHINX_DEBUG=1" in your terminal to disable
@@ -49,20 +57,12 @@ pygments_style = 'sphinx'
 # The theme to use for HTML and HTML Help pages.  Major themes that come with
 # Sphinx are currently 'default' and 'sphinxdoc'.
 # html_theme_path = ["."]
-# html_theme = '_theme'
+html_theme = 'openstackdocs'
 # html_static_path = ['static']
 
 # Output file base name for HTML help builder.
 htmlhelp_basename = '%sdoc' % project
 
-git_cmd = ["git", "log", "--pretty=format:'%ad, commit %h'", "--date=local",
-           "-n1"]
-try:
-    html_last_updated_fmt = subprocess.check_output(git_cmd).decode('utf-8')
-except Exception:
-    warnings.warn('Cannot get last updated time from git repository. '
-                  'Not setting "html_last_updated_fmt".')
-
 # Grouping the document tree into LaTeX files. List of tuples
 # (source start file, target name, title, author, documentclass
 # [howto/manual]).
diff --git a/releasenotes/source/conf.py b/releasenotes/source/conf.py
index 80658df00..9bb2c4be6 100644
--- a/releasenotes/source/conf.py
+++ b/releasenotes/source/conf.py
@@ -38,10 +38,18 @@
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
 extensions = [
-    'oslosphinx',
+    'openstackdocstheme',
     'reno.sphinxext',
 ]
 
+# openstackdocstheme options
+repository_name = 'openstack/oslo.messaging'
+bug_project = 'oslo.messaging'
+bug_tag = ''
+
+# Must set this variable to include year, month, day, hours, and minutes.
+html_last_updated_fmt = '%Y-%m-%d %H:%M'
+
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']
 
@@ -112,7 +120,7 @@ pygments_style = 'sphinx'
 
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
-html_theme = 'default'
+html_theme = 'openstackdocs'
 
 # Theme options are theme-specific and customize the look and feel of a theme
 # further.  For a list of options available for each theme, see the
diff --git a/test-requirements.txt b/test-requirements.txt
index 415bb4f36..31991e852 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -29,7 +29,7 @@ coverage!=4.4,>=4.0 # Apache-2.0
 
 # this is required for the docs build jobs
 sphinx>=1.6.2 # BSD
-oslosphinx>=4.7.0 # Apache-2.0
+openstackdocstheme>=1.11.0 # Apache-2.0
 reno!=2.3.1,>=1.8.0 # Apache-2.0
 
 # AMQP 1.0 support depends on the Qpid Proton AMQP 1.0