diff --git a/keystone/assignment/backends/ldap.py b/keystone/assignment/backends/ldap.py
index ebc3b3d03b..e0b8a52f26 100644
--- a/keystone/assignment/backends/ldap.py
+++ b/keystone/assignment/backends/ldap.py
@@ -17,6 +17,7 @@ import ldap as ldap
 import ldap.filter
 from oslo_config import cfg
 from oslo_log import log
+from oslo_log import versionutils
 
 from keystone import assignment
 from keystone.assignment.role_backends import ldap as ldap_role
@@ -25,7 +26,6 @@ from keystone.common import models
 from keystone import exception
 from keystone.i18n import _
 from keystone.identity.backends import ldap as ldap_identity
-from keystone.openstack.common import versionutils
 
 
 CONF = cfg.CONF
diff --git a/keystone/assignment/core.py b/keystone/assignment/core.py
index 59724452ec..7506bb6a63 100644
--- a/keystone/assignment/core.py
+++ b/keystone/assignment/core.py
@@ -18,6 +18,7 @@ import abc
 
 from oslo_config import cfg
 from oslo_log import log
+from oslo_log import versionutils
 import six
 
 from keystone.common import cache
@@ -28,7 +29,6 @@ from keystone import exception
 from keystone.i18n import _
 from keystone.i18n import _LI
 from keystone import notifications
-from keystone.openstack.common import versionutils
 
 
 CONF = cfg.CONF
diff --git a/keystone/common/kvs/legacy.py b/keystone/common/kvs/legacy.py
index ba036016e0..7e27d97fbb 100644
--- a/keystone/common/kvs/legacy.py
+++ b/keystone/common/kvs/legacy.py
@@ -12,8 +12,9 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
+from oslo_log import versionutils
+
 from keystone import exception
-from keystone.openstack.common import versionutils
 
 
 class DictKvs(dict):
diff --git a/keystone/common/manager.py b/keystone/common/manager.py
index 15b460ec64..06103e6bae 100644
--- a/keystone/common/manager.py
+++ b/keystone/common/manager.py
@@ -14,11 +14,10 @@
 
 import functools
 
+from oslo_log import versionutils
 from oslo_utils import importutils
 import stevedore
 
-from keystone.openstack.common import versionutils
-
 
 def response_truncated(f):
     """Truncate the list returned by the wrapped function.
diff --git a/keystone/contrib/endpoint_policy/backends/sql.py b/keystone/contrib/endpoint_policy/backends/sql.py
index 2790bb8ee5..54792f30b5 100644
--- a/keystone/contrib/endpoint_policy/backends/sql.py
+++ b/keystone/contrib/endpoint_policy/backends/sql.py
@@ -12,8 +12,9 @@
 
 import logging
 
+from oslo_log import versionutils
+
 from keystone.endpoint_policy.backends import sql
-from keystone.openstack.common import versionutils
 
 LOG = logging.getLogger(__name__)
 
diff --git a/keystone/contrib/endpoint_policy/routers.py b/keystone/contrib/endpoint_policy/routers.py
index 13f73fbcc1..714d166360 100644
--- a/keystone/contrib/endpoint_policy/routers.py
+++ b/keystone/contrib/endpoint_policy/routers.py
@@ -12,8 +12,9 @@
 
 import logging
 
+from oslo_log import versionutils
+
 from keystone.common import wsgi
-from keystone.openstack.common import versionutils
 
 LOG = logging.getLogger(__name__)
 
diff --git a/keystone/contrib/revoke/backends/kvs.py b/keystone/contrib/revoke/backends/kvs.py
index cc41fbeec9..967880b8d9 100644
--- a/keystone/contrib/revoke/backends/kvs.py
+++ b/keystone/contrib/revoke/backends/kvs.py
@@ -13,12 +13,12 @@
 import datetime
 
 from oslo_config import cfg
+from oslo_log import versionutils
 from oslo_utils import timeutils
 
 from keystone.common import kvs
 from keystone.contrib import revoke
 from keystone import exception
-from keystone.openstack.common import versionutils
 
 
 CONF = cfg.CONF
diff --git a/keystone/contrib/revoke/core.py b/keystone/contrib/revoke/core.py
index 790dfb48d4..b8e377916d 100644
--- a/keystone/contrib/revoke/core.py
+++ b/keystone/contrib/revoke/core.py
@@ -15,6 +15,7 @@ import datetime
 
 from oslo_config import cfg
 from oslo_log import log
+from oslo_log import versionutils
 from oslo_utils import timeutils
 import six
 
@@ -26,7 +27,6 @@ from keystone.contrib.revoke import model
 from keystone import exception
 from keystone.i18n import _
 from keystone import notifications
-from keystone.openstack.common import versionutils
 
 
 CONF = cfg.CONF
diff --git a/keystone/middleware/core.py b/keystone/middleware/core.py
index 265e877806..6225db568b 100644
--- a/keystone/middleware/core.py
+++ b/keystone/middleware/core.py
@@ -14,6 +14,7 @@
 
 from oslo_config import cfg
 from oslo_log import log
+from oslo_log import versionutils
 from oslo_middleware import sizelimit
 from oslo_serialization import jsonutils
 import six
@@ -23,7 +24,6 @@ from keystone.common import wsgi
 from keystone import exception
 from keystone.i18n import _LW
 from keystone.models import token_model
-from keystone.openstack.common import versionutils
 
 
 CONF = cfg.CONF
diff --git a/keystone/notifications.py b/keystone/notifications.py
index 9b1dece7d9..34d6eabe97 100644
--- a/keystone/notifications.py
+++ b/keystone/notifications.py
@@ -21,6 +21,7 @@ import socket
 
 from oslo_config import cfg
 from oslo_log import log
+from oslo_log import versionutils
 import oslo_messaging
 import pycadf
 from pycadf import cadftaxonomy as taxonomy
@@ -30,7 +31,6 @@ from pycadf import eventfactory
 from pycadf import resource
 
 from keystone.i18n import _, _LE
-from keystone.openstack.common import versionutils
 
 
 notifier_opts = [
diff --git a/keystone/openstack/common/versionutils.py b/keystone/openstack/common/versionutils.py
deleted file mode 100644
index 111bfd6f2f..0000000000
--- a/keystone/openstack/common/versionutils.py
+++ /dev/null
@@ -1,262 +0,0 @@
-# Copyright (c) 2013 OpenStack Foundation
-# All Rights Reserved.
-#
-#    Licensed under the Apache License, Version 2.0 (the "License"); you may
-#    not use this file except in compliance with the License. You may obtain
-#    a copy of the License at
-#
-#         http://www.apache.org/licenses/LICENSE-2.0
-#
-#    Unless required by applicable law or agreed to in writing, software
-#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-#    License for the specific language governing permissions and limitations
-#    under the License.
-
-"""
-Helpers for comparing version strings.
-"""
-
-import copy
-import functools
-import inspect
-import logging
-
-from oslo_config import cfg
-import pkg_resources
-import six
-
-from keystone.openstack.common._i18n import _
-
-
-LOG = logging.getLogger(__name__)
-CONF = cfg.CONF
-
-
-deprecated_opts = [
-    cfg.BoolOpt('fatal_deprecations',
-                default=False,
-                help='Enables or disables fatal status of deprecations.'),
-]
-
-
-def list_opts():
-    """Entry point for oslo.config-generator.
-    """
-    return [(None, copy.deepcopy(deprecated_opts))]
-
-
-class deprecated(object):
-    """A decorator to mark callables as deprecated.
-
-    This decorator logs a deprecation message when the callable it decorates is
-    used. The message will include the release where the callable was
-    deprecated, the release where it may be removed and possibly an optional
-    replacement.
-
-    Examples:
-
-    1. Specifying the required deprecated release
-
-    >>> @deprecated(as_of=deprecated.ICEHOUSE)
-    ... def a(): pass
-
-    2. Specifying a replacement:
-
-    >>> @deprecated(as_of=deprecated.ICEHOUSE, in_favor_of='f()')
-    ... def b(): pass
-
-    3. Specifying the release where the functionality may be removed:
-
-    >>> @deprecated(as_of=deprecated.ICEHOUSE, remove_in=+1)
-    ... def c(): pass
-
-    4. Specifying the deprecated functionality will not be removed:
-    >>> @deprecated(as_of=deprecated.ICEHOUSE, remove_in=0)
-    ... def d(): pass
-
-    5. Specifying a replacement, deprecated functionality will not be removed:
-    >>> @deprecated(as_of=deprecated.ICEHOUSE, in_favor_of='f()', remove_in=0)
-    ... def e(): pass
-
-    """
-
-    # NOTE(morganfainberg): Bexar is used for unit test purposes, it is
-    # expected we maintain a gap between Bexar and Folsom in this list.
-    BEXAR = 'B'
-    FOLSOM = 'F'
-    GRIZZLY = 'G'
-    HAVANA = 'H'
-    ICEHOUSE = 'I'
-    JUNO = 'J'
-    KILO = 'K'
-    LIBERTY = 'L'
-
-    _RELEASES = {
-        # NOTE(morganfainberg): Bexar is used for unit test purposes, it is
-        # expected we maintain a gap between Bexar and Folsom in this list.
-        'B': 'Bexar',
-        'F': 'Folsom',
-        'G': 'Grizzly',
-        'H': 'Havana',
-        'I': 'Icehouse',
-        'J': 'Juno',
-        'K': 'Kilo',
-        'L': 'Liberty',
-    }
-
-    _deprecated_msg_with_alternative = _(
-        '%(what)s is deprecated as of %(as_of)s in favor of '
-        '%(in_favor_of)s and may be removed in %(remove_in)s.')
-
-    _deprecated_msg_no_alternative = _(
-        '%(what)s is deprecated as of %(as_of)s and may be '
-        'removed in %(remove_in)s. It will not be superseded.')
-
-    _deprecated_msg_with_alternative_no_removal = _(
-        '%(what)s is deprecated as of %(as_of)s in favor of %(in_favor_of)s.')
-
-    _deprecated_msg_with_no_alternative_no_removal = _(
-        '%(what)s is deprecated as of %(as_of)s. It will not be superseded.')
-
-    def __init__(self, as_of, in_favor_of=None, remove_in=2, what=None):
-        """Initialize decorator
-
-        :param as_of: the release deprecating the callable. Constants
-            are define in this class for convenience.
-        :param in_favor_of: the replacement for the callable (optional)
-        :param remove_in: an integer specifying how many releases to wait
-            before removing (default: 2)
-        :param what: name of the thing being deprecated (default: the
-            callable's name)
-
-        """
-        self.as_of = as_of
-        self.in_favor_of = in_favor_of
-        self.remove_in = remove_in
-        self.what = what
-
-    def __call__(self, func_or_cls):
-        if not self.what:
-            self.what = func_or_cls.__name__ + '()'
-        msg, details = self._build_message()
-
-        if inspect.isfunction(func_or_cls):
-
-            @six.wraps(func_or_cls)
-            def wrapped(*args, **kwargs):
-                report_deprecated_feature(LOG, msg, details)
-                return func_or_cls(*args, **kwargs)
-            return wrapped
-        elif inspect.isclass(func_or_cls):
-            orig_init = func_or_cls.__init__
-
-            # TODO(tsufiev): change `functools` module to `six` as
-            # soon as six 1.7.4 (with fix for passing `assigned`
-            # argument to underlying `functools.wraps`) is released
-            # and added to the oslo-incubator requrements
-            @functools.wraps(orig_init, assigned=('__name__', '__doc__'))
-            def new_init(self, *args, **kwargs):
-                report_deprecated_feature(LOG, msg, details)
-                orig_init(self, *args, **kwargs)
-            func_or_cls.__init__ = new_init
-            return func_or_cls
-        else:
-            raise TypeError('deprecated can be used only with functions or '
-                            'classes')
-
-    def _get_safe_to_remove_release(self, release):
-        # TODO(dstanek): this method will have to be reimplemented once
-        #    when we get to the X release because once we get to the Y
-        #    release, what is Y+2?
-        new_release = chr(ord(release) + self.remove_in)
-        if new_release in self._RELEASES:
-            return self._RELEASES[new_release]
-        else:
-            return new_release
-
-    def _build_message(self):
-        details = dict(what=self.what,
-                       as_of=self._RELEASES[self.as_of],
-                       remove_in=self._get_safe_to_remove_release(self.as_of))
-
-        if self.in_favor_of:
-            details['in_favor_of'] = self.in_favor_of
-            if self.remove_in > 0:
-                msg = self._deprecated_msg_with_alternative
-            else:
-                # There are no plans to remove this function, but it is
-                # now deprecated.
-                msg = self._deprecated_msg_with_alternative_no_removal
-        else:
-            if self.remove_in > 0:
-                msg = self._deprecated_msg_no_alternative
-            else:
-                # There are no plans to remove this function, but it is
-                # now deprecated.
-                msg = self._deprecated_msg_with_no_alternative_no_removal
-        return msg, details
-
-
-def is_compatible(requested_version, current_version, same_major=True):
-    """Determine whether `requested_version` is satisfied by
-    `current_version`; in other words, `current_version` is >=
-    `requested_version`.
-
-    :param requested_version: version to check for compatibility
-    :param current_version: version to check against
-    :param same_major: if True, the major version must be identical between
-        `requested_version` and `current_version`. This is used when a
-        major-version difference indicates incompatibility between the two
-        versions. Since this is the common-case in practice, the default is
-        True.
-    :returns: True if compatible, False if not
-    """
-    requested_parts = pkg_resources.parse_version(requested_version)
-    current_parts = pkg_resources.parse_version(current_version)
-
-    if same_major and (requested_parts[0] != current_parts[0]):
-        return False
-
-    return current_parts >= requested_parts
-
-
-# Track the messages we have sent already. See
-# report_deprecated_feature().
-_deprecated_messages_sent = {}
-
-
-def report_deprecated_feature(logger, msg, *args, **kwargs):
-    """Call this function when a deprecated feature is used.
-
-    If the system is configured for fatal deprecations then the message
-    is logged at the 'critical' level and :class:`DeprecatedConfig` will
-    be raised.
-
-    Otherwise, the message will be logged (once) at the 'warn' level.
-
-    :raises: :class:`DeprecatedConfig` if the system is configured for
-             fatal deprecations.
-    """
-    stdmsg = _("Deprecated: %s") % msg
-    CONF.register_opts(deprecated_opts)
-    if CONF.fatal_deprecations:
-        logger.critical(stdmsg, *args, **kwargs)
-        raise DeprecatedConfig(msg=stdmsg)
-
-    # Using a list because a tuple with dict can't be stored in a set.
-    sent_args = _deprecated_messages_sent.setdefault(msg, list())
-
-    if args in sent_args:
-        # Already logged this message, so don't log it again.
-        return
-
-    sent_args.append(args)
-    logger.warn(stdmsg, *args, **kwargs)
-
-
-class DeprecatedConfig(Exception):
-    message = _("Fatal call to deprecated config: %(msg)s")
-
-    def __init__(self, msg):
-        super(Exception, self).__init__(self.message % dict(msg=msg))
diff --git a/keystone/tests/unit/test_backend_sql.py b/keystone/tests/unit/test_backend_sql.py
index 0fa18b0011..ec64f03ed8 100644
--- a/keystone/tests/unit/test_backend_sql.py
+++ b/keystone/tests/unit/test_backend_sql.py
@@ -20,6 +20,7 @@ import mock
 from oslo_config import cfg
 from oslo_db import exception as db_exception
 from oslo_db import options
+from oslo_log import versionutils
 from six.moves import range
 import sqlalchemy
 from sqlalchemy import exc
@@ -29,7 +30,6 @@ from keystone.common import driver_hints
 from keystone.common import sql
 from keystone import exception
 from keystone.identity.backends import sql as identity_sql
-from keystone.openstack.common import versionutils
 from keystone.tests import unit as tests
 from keystone.tests.unit import default_fixtures
 from keystone.tests.unit.ksfixtures import database
diff --git a/keystone/token/providers/common.py b/keystone/token/providers/common.py
index 4152190796..945457313e 100644
--- a/keystone/token/providers/common.py
+++ b/keystone/token/providers/common.py
@@ -14,6 +14,7 @@
 
 from oslo_config import cfg
 from oslo_log import log
+from oslo_log import versionutils
 from oslo_serialization import jsonutils
 from oslo_utils import timeutils
 import six
@@ -25,7 +26,6 @@ from keystone.common import utils
 from keystone.contrib import federation
 from keystone import exception
 from keystone.i18n import _, _LE
-from keystone.openstack.common import versionutils
 from keystone import token
 from keystone.token import provider
 
diff --git a/keystone/trust/controllers.py b/keystone/trust/controllers.py
index 605a1faee7..c9897b891a 100644
--- a/keystone/trust/controllers.py
+++ b/keystone/trust/controllers.py
@@ -16,6 +16,7 @@ import uuid
 
 from oslo_config import cfg
 from oslo_log import log
+from oslo_log import versionutils
 from oslo_utils import timeutils
 import six
 
@@ -28,7 +29,6 @@ from keystone import exception
 from keystone.i18n import _
 from keystone.models import token_model
 from keystone import notifications
-from keystone.openstack.common import versionutils
 from keystone.trust import schema
 
 
diff --git a/openstack-common.conf b/openstack-common.conf
index 0bd422342a..1d4ff4aa0d 100644
--- a/openstack-common.conf
+++ b/openstack-common.conf
@@ -3,7 +3,6 @@
 module=fileutils
 module=service
 module=systemd
-module=versionutils
 
 script=tools/colorizer.py
 script=tools/install_venv_common.py