diff --git a/doc/requirements.txt b/doc/requirements.txt
index a02a541e6..3a7529d33 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -1,5 +1,5 @@
 sphinx>=1.6.2
-openstackdocstheme>=1.19.0 # Apache-2.0
+openstackdocstheme>=1.26.0 # Apache-2.0
 
 # Release Notes documentation
 reno>=0.1.1 # Apache2
diff --git a/doc/source/conf.py b/doc/source/conf.py
index 3a67499af..7a73af5ea 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -82,7 +82,7 @@ pygments_style = 'sphinx'
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 #
-html_theme = 'alabaster'
+html_theme = 'starlingxdocs'
 
 # 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/releasenotes/source/conf.py b/releasenotes/source/conf.py
index 4487d10c1..55a1d27c8 100644
--- a/releasenotes/source/conf.py
+++ b/releasenotes/source/conf.py
@@ -93,7 +93,7 @@ pygments_style = 'sphinx'
 
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
-html_theme = 'alabaster'
+html_theme = 'starlingxdocs'
 
 # 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