diff --git a/api-ref/source/conf.py b/api-ref/source/conf.py
index da7720ccdd..3c968924f7 100644
--- a/api-ref/source/conf.py
+++ b/api-ref/source/conf.py
@@ -24,9 +24,7 @@
 # serve to show the default.
 
 import os
-import subprocess
 import sys
-import warnings
 
 extensions = [
     'os_api_ref',
@@ -61,19 +59,8 @@ source_suffix = '.rst'
 master_doc = 'index'
 
 # General information about the project.
-project = u'Container Infrastructure Management API Reference'
 copyright = u'2010-present, OpenStack Foundation'
 
-# 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.
-#
-from magnum.version import version_info
-# The full version, including alpha/beta/rc tags.
-release = version_info.release_string()
-# The short X.Y version.
-version = version_info.version_string()
-
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
 #
@@ -150,17 +137,6 @@ bug_tag = 'api-ref'
 # so a file named "default.css" will overwrite the builtin "default.css".
 # html_static_path = ['_static']
 
-# If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
-# using the given strftime format.
-# html_last_updated_fmt = '%b %d, %Y'
-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".')
-
 # If true, SmartyPants will be used to convert quotes and dashes to
 # typographically correct entities.
 # html_use_smartypants = True
diff --git a/doc/requirements.txt b/doc/requirements.txt
index e647310699..70411996f3 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -1,7 +1,7 @@
 # The order of packages is significant, because pip processes them in the order
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
-openstackdocstheme>=1.18.1 # Apache-2.0
+openstackdocstheme>=1.20.0 # Apache-2.0
 osprofiler>=1.4.0 # Apache-2.0
 os-api-ref>=1.4.0 # Apache-2.0
 sphinx!=1.6.6,!=1.6.7,>=1.6.2;python_version>='3.4' # BSD
diff --git a/doc/source/conf.py b/doc/source/conf.py
index 4b55808b72..53eefe532d 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -51,7 +51,6 @@ source_suffix = '.rst'
 master_doc = 'index'
 
 # General information about the project.
-project = u'magnum'
 copyright = u'2013, OpenStack Foundation'
 
 # If true, '()' will be appended to :func: etc. cross-reference text.
@@ -64,12 +63,6 @@ add_module_names = True
 # The name of the Pygments (syntax highlighting) style to use.
 pygments_style = 'sphinx'
 
-# The short X.Y version.
-from magnum.version import version_info as magnum_version
-version = magnum_version.canonical_version_string()
-# The full version, including alpha/beta/rc tags.
-release = magnum_version.version_string_with_vcs()
-
 # -- Options for HTML output --------------------------------------------------
 
 # The theme to use for HTML and HTML Help pages.  Major themes that come with
@@ -79,17 +72,15 @@ html_theme = 'openstackdocs'
 # html_static_path = ['static']
 
 # Output file base name for HTML help builder.
-htmlhelp_basename = '%sdoc' % project
-
-html_last_updated_fmt = '%Y-%m-%d %H:%M'
+htmlhelp_basename = 'magnumdoc'
 
 # Grouping the document tree into LaTeX files. List of tuples
 # (source start file, target name, title, author, documentclass
 # [howto/manual]).
 latex_documents = [
     ('index',
-     '%s.tex' % project,
-     u'%s Documentation' % project,
+     'magnum.tex',
+     u'magnum Documentation',
      u'OpenStack Foundation', 'manual'),
 ]
 
diff --git a/lower-constraints.txt b/lower-constraints.txt
index f01209b2ec..8d7c2a80d4 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -68,7 +68,7 @@ netaddr==0.7.18
 netifaces==0.10.6
 networkx==1.11
 oauthlib==2.0.6
-openstackdocstheme==1.18.1
+openstackdocstheme==1.20.0
 openstacksdk==0.12.0
 os-api-ref==1.4.0
 os-client-config==1.29.0
diff --git a/releasenotes/source/conf.py b/releasenotes/source/conf.py
index beab326528..bf90a5ccfb 100644
--- a/releasenotes/source/conf.py
+++ b/releasenotes/source/conf.py
@@ -61,7 +61,6 @@ source_suffix = '.rst'
 master_doc = 'index'
 
 # General information about the project.
-project = u'Magnum Release Notes'
 copyright = u'2016, Magnum developers'
 
 # Remove setting of version/release
@@ -150,10 +149,6 @@ 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
@@ -197,17 +192,6 @@ htmlhelp_basename = 'MagnumReleaseNotesdoc'
 
 # -- 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]).