diff --git a/doc/source/conf.py b/doc/source/conf.py
index 22b8c24e..37978187 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -25,8 +25,6 @@ import os
 import sys
 
 
-import pbr.version
-
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
 # documentation root, use os.path.abspath to make it absolute, like shown here.
@@ -81,17 +79,6 @@ oslosphinx_cgit_link = (
     'https://opendev.org/openstack/{}'.format(target_name)
 )
 
-# The version info for the project you're documenting, acts as replacement for
-# |version| and |release|, also used in various other places throughout the
-# built documents.
-#
-# The short X.Y version.
-version_info = pbr.version.VersionInfo(target_name)
-# The full version, including alpha/beta/rc tags.
-release = version_info.version_string_with_vcs()
-# The short X.Y version.
-version = version_info.canonical_version_string()
-
 # openstackdocstheme options
 repository_name = 'openstack/' + target_name
 bug_project = project.lower()
@@ -184,10 +171,6 @@ html_theme_options = {
 # 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.
-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
@@ -233,17 +216,6 @@ html_copy_source = False
 
 # -- Options for LaTeX output ---------------------------------------------
 
-latex_elements = {
-    # The paper size ('letterpaper' or 'a4paper').
-    # 'papersize': 'letterpaper',
-
-    # The font size ('10pt', '11pt' or '12pt').
-    # 'pointsize': '10pt',
-
-    # Additional stuff for the LaTeX preamble.
-    # 'preamble': '',
-}
-
 # Grouping the document tree into LaTeX files. List of tuples
 # (source start file, target name, title,
 #  author, documentclass [howto, manual, or own class]).
@@ -318,4 +290,4 @@ pdf_documents = [
      title, author)
 ]
 
-locale_dirs = ['locale/']
\ No newline at end of file
+locale_dirs = ['locale/']
diff --git a/releasenotes/source/conf.py b/releasenotes/source/conf.py
index c50d43bc..576d0a84 100644
--- a/releasenotes/source/conf.py
+++ b/releasenotes/source/conf.py
@@ -123,7 +123,7 @@ 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
@@ -159,10 +159,6 @@ html_static_path = ['_static']
 # 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.
-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
@@ -206,17 +202,6 @@ htmlhelp_basename = target_name + '-docs'
 
 # -- Options for LaTeX output ---------------------------------------------
 
-latex_elements = {
-    # The paper size ('letterpaper' or 'a4paper').
-    # 'papersize': 'letterpaper',
-
-    # The font size ('10pt', '11pt' or '12pt').
-    # 'pointsize': '10pt',
-
-    # Additional stuff for the LaTeX preamble.
-    # 'preamble': '',
-}
-
 # Grouping the document tree into LaTeX files. List of tuples
 # (source start file, target name, title,
 #  author, documentclass [howto, manual, or own class]).