diff --git a/llama_stack/distribution/access_control/access_control.py b/llama_stack/distribution/access_control/access_control.py
index 89ae60343..075152ce4 100644
--- a/llama_stack/distribution/access_control/access_control.py
+++ b/llama_stack/distribution/access_control/access_control.py
@@ -105,7 +105,17 @@ def is_action_allowed(
     return False
 
 
-def build_access_denied_message(action: str | None, resource: ProtectedResource | None, user: User | None) -> str:
+class AccessDeniedError(RuntimeError):
+    def __init__(self, action: str | None = None, resource: ProtectedResource | None = None, user: User | None = None):
+        self.action = action
+        self.resource = resource
+        self.user = user
+
+        message = _build_access_denied_message(action, resource, user)
+        super().__init__(message)
+
+
+def _build_access_denied_message(action: str | None, resource: ProtectedResource | None, user: User | None) -> str:
     """Build detailed error message for access denied scenarios."""
     if action and resource and user:
         resource_info = f"{resource.type}::{resource.identifier}"
@@ -119,13 +129,3 @@ def build_access_denied_message(action: str | None, resource: ProtectedResource
         message = "Insufficient permissions"
 
     return message
-
-
-class AccessDeniedError(RuntimeError):
-    def __init__(self, action: str | None = None, resource: ProtectedResource | None = None, user: User | None = None):
-        self.action = action
-        self.resource = resource
-        self.user = user
-
-        message = build_access_denied_message(action, resource, user)
-        super().__init__(message)
diff --git a/tests/unit/fixtures.py b/tests/unit/fixtures.py
index 7174d2e78..4e50c5e08 100644
--- a/tests/unit/fixtures.py
+++ b/tests/unit/fixtures.py
@@ -4,14 +4,14 @@
 # This source code is licensed under the terms described in the LICENSE file in
 # the root directory of this source tree.
 
-import pytest
+import pytest_asyncio
 
 from llama_stack.distribution.store.registry import CachedDiskDistributionRegistry, DiskDistributionRegistry
 from llama_stack.providers.utils.kvstore.config import SqliteKVStoreConfig
 from llama_stack.providers.utils.kvstore.sqlite import SqliteKVStoreImpl
 
 
-@pytest.fixture(scope="function")
+@pytest_asyncio.fixture(scope="function")
 async def sqlite_kvstore(tmp_path):
     db_path = tmp_path / "test_kv.db"
     kvstore_config = SqliteKVStoreConfig(db_path=db_path.as_posix())
@@ -20,14 +20,14 @@ async def sqlite_kvstore(tmp_path):
     yield kvstore
 
 
-@pytest.fixture(scope="function")
+@pytest_asyncio.fixture(scope="function")
 async def disk_dist_registry(sqlite_kvstore):
     registry = DiskDistributionRegistry(sqlite_kvstore)
     await registry.initialize()
     yield registry
 
 
-@pytest.fixture(scope="function")
+@pytest_asyncio.fixture(scope="function")
 async def cached_disk_dist_registry(sqlite_kvstore):
     registry = CachedDiskDistributionRegistry(sqlite_kvstore)
     await registry.initialize()
diff --git a/tests/unit/providers/agents/test_persistence_access_control.py b/tests/unit/providers/agents/test_persistence_access_control.py
index d5b876a09..656d1e53c 100644
--- a/tests/unit/providers/agents/test_persistence_access_control.py
+++ b/tests/unit/providers/agents/test_persistence_access_control.py
@@ -9,6 +9,7 @@ from datetime import datetime
 from unittest.mock import patch
 
 import pytest
+import pytest_asyncio
 
 from llama_stack.apis.agents import Turn
 from llama_stack.apis.inference import CompletionMessage, StopReason
@@ -16,7 +17,7 @@ from llama_stack.distribution.datatypes import User
 from llama_stack.providers.inline.agents.meta_reference.persistence import AgentPersistence, AgentSessionInfo
 
 
-@pytest.fixture
+@pytest_asyncio.fixture
 async def test_setup(sqlite_kvstore):
     agent_persistence = AgentPersistence(agent_id="test_agent", kvstore=sqlite_kvstore, policy={})
     yield agent_persistence
diff --git a/tests/unit/providers/vector_io/test_sqlite_vec.py b/tests/unit/providers/vector_io/test_sqlite_vec.py
index bbac717c7..5d9d92cf3 100644
--- a/tests/unit/providers/vector_io/test_sqlite_vec.py
+++ b/tests/unit/providers/vector_io/test_sqlite_vec.py
@@ -148,7 +148,7 @@ async def test_chunk_id_conflict(sqlite_vec_index, sample_chunks, embedding_dime
     assert len(chunk_ids) == len(set(chunk_ids)), "Duplicate chunk IDs detected across batches!"
 
 
-@pytest.fixture(scope="session")
+@pytest_asyncio.fixture(scope="session")
 async def sqlite_vec_adapter(sqlite_connection):
     config = type("Config", (object,), {"db_path": ":memory:"})  # Mock config with in-memory database
     adapter = SQLiteVecVectorIOAdapter(config=config, inference_api=None)
diff --git a/tests/unit/server/test_access_control.py b/tests/unit/server/test_access_control.py
index f9ad47b0c..af03ddacb 100644
--- a/tests/unit/server/test_access_control.py
+++ b/tests/unit/server/test_access_control.py
@@ -7,6 +7,7 @@
 from unittest.mock import MagicMock, Mock, patch
 
 import pytest
+import pytest_asyncio
 import yaml
 from pydantic import TypeAdapter, ValidationError
 
@@ -26,7 +27,7 @@ def _return_model(model):
     return model
 
 
-@pytest.fixture
+@pytest_asyncio.fixture
 async def test_setup(cached_disk_dist_registry):
     mock_inference = Mock()
     mock_inference.__provider_spec__ = MagicMock()
@@ -245,7 +246,7 @@ async def test_automatic_access_attributes(mock_get_authenticated_user, test_set
     assert model.identifier == "auto-access-model"
 
 
-@pytest.fixture
+@pytest_asyncio.fixture
 async def test_setup_with_access_policy(cached_disk_dist_registry):
     mock_inference = Mock()
     mock_inference.__provider_spec__ = MagicMock()