diff --git a/masakari/policy.py b/masakari/policy.py
index 6faef4c7..ecbd7a1c 100644
--- a/masakari/policy.py
+++ b/masakari/policy.py
@@ -21,7 +21,6 @@ import re
 import sys
 
 from oslo_config import cfg
-from oslo_policy import opts
 from oslo_policy import policy
 from oslo_utils import excutils
 
@@ -33,12 +32,6 @@ from masakari import policies
 CONF = cfg.CONF
 LOG = logging.getLogger(__name__)
 
-# TODO(gmann): Remove setting the default value of config policy_file
-# once oslo_policy change the default value to 'policy.yaml'.
-# https://github.com/openstack/oslo.policy/blob/a626ad12fe5a3abd49d70e3e5b95589d279ab578/oslo_policy/opts.py#L49
-DEFAULT_POLICY_FILE = 'policy.yaml'
-opts.set_defaults(cfg.CONF, DEFAULT_POLICY_FILE)
-
 _ENFORCER = None
 # saved_file_rules and used to compare with new rules to determine the
 # rules whether were updated.
diff --git a/requirements.txt b/requirements.txt
index 337c2d26..74e4b6d6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ oslo.messaging>=14.1.0 # Apache-2.0
 oslo.i18n>=3.15.3 # Apache-2.0
 oslo.log>=3.36.0 # Apache-2.0
 oslo.middleware>=3.31.0 # Apache-2.0
-oslo.policy>=3.6.0 # Apache-2.0
+oslo.policy>=4.5.0 # Apache-2.0
 oslo.service!=1.28.1,>=1.24.0 # Apache-2.0
 oslo.upgradecheck>=1.3.0 # Apache-2.0
 oslo.utils>=4.7.0 # Apache-2.0