diff --git a/requirements.txt b/requirements.txt
index b0a902632..cd373d490 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,7 +27,7 @@ oslo.db>=5.0.0 # Apache-2.0
 oslo.log>=3.36.0 # Apache-2.0
 oslo.messaging>=14.2.0 # Apache-2.0
 oslo.middleware>=3.31.0 # Apache-2.0
-oslo.policy>=3.11.0 # Apache-2.0
+oslo.policy>=4.5.0 # Apache-2.0
 oslo.privsep>=2.4.0 # Apache-2.0
 oslo.reports>=1.18.0 # Apache-2.0
 oslo.rootwrap>=5.8.0 # Apache-2.0
diff --git a/tacker/policy.py b/tacker/policy.py
index 081aa8069..1f1636767 100644
--- a/tacker/policy.py
+++ b/tacker/policy.py
@@ -39,14 +39,11 @@ _ENFORCER = None
 ADMIN_CTX_POLICY = 'context_is_admin'
 
 # TODO(gmann): Remove setting the default value of config options:
-# - 'policy_file' once oslo_policy change their default value to what is
-# overridden here.
 # - 'enforce_scope', and 'enforce_new_defaults' once cinder is ready with the
 # new RBAC (oslo_policy enable them by default)
 DEFAULT_POLICY_FILE = 'policy.yaml'
 opts.set_defaults(
     cfg.CONF,
-    DEFAULT_POLICY_FILE,
     enforce_scope=False,
     enforce_new_defaults=False)