diff --git a/doc/source/conf.py b/doc/source/conf.py
index aa7011ae24..d793e5e99a 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -25,7 +25,6 @@
 import openstackdocstheme
 import os
 import pbr.version
-from subprocess import Popen, PIPE
 import sys
 
 # If extensions (or modules to document with autodoc) are in another directory,
@@ -42,7 +41,7 @@ sys.path.insert(0, os.path.abspath('../../playbooks/inventory/'))
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
 # TODO(ajaeger): enable PDF building, for example add 'rst2pdf.pdfbuilder'
-extensions = ['sphinx.ext.autodoc']
+extensions = ['sphinx.ext.autodoc','sphinxmark']
 
 # Add any paths that contain templates here, relative to this directory.
 #templates_path = ['_templates']
@@ -328,3 +327,14 @@ rst_epilog = """
        current_release_formal_name,
        upgrade_backup_dir,
        latest_tag)
+
+watermark = os.popen("git branch --contains $(git rev-parse HEAD) | awk -F/ '/stable/ {print $2}'").read().strip(' \n\t').capitalize()
+if watermark == "":
+  watermark = "Pre-release"
+
+# -- Options for sphinxmark -----------------------------------------------
+sphinxmark_enable = True
+sphinxmark_div = 'docs-body'
+sphinxmark_image = 'text'
+sphinxmark_text = watermark
+sphinxmark_text_size = 70
diff --git a/tox.ini b/tox.ini
index 0aa390f1e8..59d4e2e45e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -11,6 +11,7 @@ install_command =
     pip install -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}
 deps =
     -r{toxinidir}/test-requirements.txt
+    sphinxmark>=0.1.14
 passenv =
     HOME
     http_proxy