diff --git a/requirements.txt b/requirements.txt
index 54d6d61b5..3dc4d7c34 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,7 +27,7 @@ oslo.concurrency>=4.1.0 # Apache-2.0
 oslo.config>=8.1.0 # Apache-2.0
 oslo.messaging>=14.1.0 # Apache-2.0
 oslo.middleware>=4.1.0 # Apache-2.0
-oslo.policy>=3.6.0 # Apache-2.0
+oslo.policy>=4.5.0 # Apache-2.0
 oslo.privsep>=2.2.0 # Apache-2.0
 oslo.serialization>=3.2.0 # Apache-2.0
 oslo.service>=2.2.0 # Apache-2.0
diff --git a/zun/common/config.py b/zun/common/config.py
index c0e555c91..5c1e2b3e5 100644
--- a/zun/common/config.py
+++ b/zun/common/config.py
@@ -16,7 +16,6 @@
 #    under the License.
 
 from oslo_middleware import cors
-from oslo_policy import opts
 
 from zun.common import rpc
 import zun.conf
@@ -40,11 +39,6 @@ def set_config_defaults():
     """This method updates all configuration default values."""
     set_cors_middleware_defaults()
 
-    # 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
-    opts.set_defaults(zun.conf.CONF, 'policy.yaml')
-
 
 def set_cors_middleware_defaults():
     """Update default configuration options for oslo.middleware."""
diff --git a/zun/common/policy.py b/zun/common/policy.py
index acdc087d1..54014a163 100644
--- a/zun/common/policy.py
+++ b/zun/common/policy.py
@@ -16,7 +16,6 @@
 """Policy Engine For zun."""
 
 from oslo_log import log as logging
-from oslo_policy import opts
 from oslo_policy import policy
 from oslo_utils import excutils
 
@@ -28,12 +27,6 @@ _ENFORCER = None
 CONF = zun.conf.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(CONF, DEFAULT_POLICY_FILE)
-
 
 # we can get a policy enforcer by this init.
 # oslo policy support change policy rule dynamically.