diff --git a/dask_cloudprovider/openstack/instances.py b/dask_cloudprovider/openstack/instances.py
index 6605b6d6..22ec73b8 100644
--- a/dask_cloudprovider/openstack/instances.py
+++ b/dask_cloudprovider/openstack/instances.py
@@ -20,6 +20,7 @@
     )
     raise ImportError(msg) from e
 
+
 class OpenStackInstance(VMInterface):
     def __init__(
         self,
@@ -175,6 +176,7 @@ async def stop_vm(self):
         # Code to stop the instance
         pass  # Placeholder to ensure correct indentation
 
+
 class OpenStackScheduler(SchedulerMixin, OpenStackInstance):
     """Scheduler running on an OpenStack Instance."""
 
@@ -212,9 +214,11 @@ async def start_scheduler(self):
         self.cluster.scheduler_external_ip = self.external_ip
         self.cluster.scheduler_port = self.port
 
+
 class OpenStackWorker(WorkerMixin, OpenStackInstance):
     """Worker running on a OpenStack Instance."""
 
+
 class OpenStackCluster(VMCluster):
     """Cluster running on Openstack VM Instances
 
@@ -316,8 +320,8 @@ class OpenStackCluster(VMCluster):
         Security Group: all-open
     Creating scheduler instance
         dask-9b85a5f8-scheduler
-	        Internal IP: 10.0.30.148
-	        External IP: None
+                Internal IP: 10.0.30.148
+                External IP: None
     Waiting for scheduler to run at 10.0.30.148:8786
     Scheduler is running
     Creating worker instance
diff --git a/dask_cloudprovider/openstack/tests/test_instances.py b/dask_cloudprovider/openstack/tests/test_instances.py
index 466b08fa..5485811d 100644
--- a/dask_cloudprovider/openstack/tests/test_instances.py
+++ b/dask_cloudprovider/openstack/tests/test_instances.py
@@ -5,6 +5,8 @@
 from distributed.core import Status
 
 # Optional: Skips tests if OpenStack credentials are not set
+
+
 async def skip_without_credentials(config):
     if (
         config.get("auth_url") is None
@@ -25,22 +27,28 @@ async def skip_without_credentials(config):
         """
         )
 
+
 @pytest.fixture
 async def config():
+
     return dask.config.get("cloudprovider.openstack", {})
 
+
 @pytest.fixture
 @pytest.mark.external
 async def cluster(config):
     await skip_without_credentials(config)
+
     async with OpenStackCluster(asynchronous=True) as cluster:
         yield cluster
 
+
 @pytest.mark.asyncio
 async def test_init():
     cluster = OpenStackCluster(asynchronous=True)
     assert cluster.status == Status.created
 
+
 @pytest.mark.asyncio
 @pytest.mark.timeout(600)
 async def test_create_cluster(cluster):
@@ -52,10 +60,12 @@ async def test_create_cluster(cluster):
     async with Client(cluster, asynchronous=True) as client:
 
         def inc(x):
+
             return x + 1
 
         assert await client.submit(inc, 10).result() == 11
 
+
 @pytest.mark.asyncio
 async def test_get_cloud_init():
     cloud_init = OpenStackCluster.get_cloud_init(