diff --git a/.gitreview b/.gitreview
index 45314a6..12f531c 100644
--- a/.gitreview
+++ b/.gitreview
@@ -2,4 +2,4 @@
 host=review.opendev.org
 port=29418
 project=openstack/python-observabilityclient.git
-defaultbranch=master
+defaultbranch=stable/2025.1
diff --git a/.zuul.yaml b/.zuul.yaml
index d26f572..a1cbb9c 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -8,16 +8,24 @@
     required-projects:
       - openstack/python-observabilityclient
       - openstack/ceilometer
-      - infrawatch/sg-core
+      - openstack-k8s-operators/sg-core
+      - openstack/devstack-plugin-prometheus
     timeout: 4200
     vars:
       devstack_localrc:
         USE_PYTHON3: True
         PROMETHEUS_SERVICE_SCRAPE_TARGETS: prometheus,sg-core
         CEILOMETER_BACKEND: sg-core
+        PROMETHEUS_CUSTOM_SCRAPE_TARGETS: "localhost:3000,localhost:9090"
       devstack_plugins:
-        sg-core: https://github.com/infrawatch/sg-core
+        sg-core: https://github.com/openstack-k8s-operators/sg-core
         ceilometer: https://opendev.org/openstack/ceilometer
+        devstack-plugin-prometheus: https://opendev.org/openstack/devstack-plugin-prometheus
+      devstack_services:
+        node_exporter: false
+      zuul_copy_output:
+        /etc/prometheus/prometheus.yml: logs
+        /etc/openstack/prometheus.yaml: logs
 
 - project:
     queue: telemetry
diff --git a/observabilityclient/prometheus_client.py b/observabilityclient/prometheus_client.py
index 5380a8d..68483f8 100644
--- a/observabilityclient/prometheus_client.py
+++ b/observabilityclient/prometheus_client.py
@@ -68,9 +68,12 @@ def set_client_cert(self, client_cert, client_key):
     def set_basic_auth(self, auth_user, auth_password):
         self._session.auth = (auth_user, auth_password)
 
+    def _get_url(self, endpoint):
+        scheme = 'https' if self._session.verify else 'http'
+        return f"{scheme}://{self._host}/api/v1/{endpoint}"  # noqa: E231
+
     def _get(self, endpoint, params=None):
-        url = (f"{'https' if self._session.verify else 'http'}://"
-               f"{self._host}/api/v1/{endpoint}")
+        url = self._get_url(endpoint)
         resp = self._session.get(url, params=params,
                                  headers={'Accept': 'application/json'})
         if resp.status_code != requests.codes.ok:
@@ -82,8 +85,7 @@ def _get(self, endpoint, params=None):
         return decoded
 
     def _post(self, endpoint, params=None):
-        url = (f"{'https' if self._session.verify else 'http'}://"
-               f"{self._host}/api/v1/{endpoint}")
+        url = self._get_url(endpoint)
         resp = self._session.post(url, params=params,
                                   headers={'Accept': 'application/json'})
         if resp.status_code != requests.codes.ok:
diff --git a/observabilityclient/tests/functional/test_cli.py b/observabilityclient/tests/functional/test_cli.py
index 626be60..4a8c053 100644
--- a/observabilityclient/tests/functional/test_cli.py
+++ b/observabilityclient/tests/functional/test_cli.py
@@ -88,7 +88,7 @@ def test_show(self):
                 metric["__name__"]
             )
             self.assertEqual(
-                "sg-core",
+                "custom",
                 metric["job"]
             )
 
@@ -103,7 +103,7 @@ def test_query(self):
                 metric["__name__"]
             )
             self.assertEqual(
-                "sg-core",
+                "custom",
                 metric["job"]
             )
 
diff --git a/observabilityclient/tests/functional/test_python_api.py b/observabilityclient/tests/functional/test_python_api.py
index 8f3bf85..162b7d8 100644
--- a/observabilityclient/tests/functional/test_python_api.py
+++ b/observabilityclient/tests/functional/test_python_api.py
@@ -52,7 +52,7 @@ def test_show(self):
         for metric in ret:
             self.assertEqual("ceilometer_image_size",
                              metric.labels["__name__"])
-            self.assertEqual("sg-core",
+            self.assertEqual("custom",
                              metric.labels["job"])
 
     def test_query(self):
@@ -62,7 +62,7 @@ def test_query(self):
         for metric in ret:
             self.assertEqual("ceilometer_image_size",
                              metric.labels["__name__"])
-            self.assertEqual("sg-core", metric.labels["job"])
+            self.assertEqual("custom", metric.labels["job"])
 
 
 class PythonAPITestFunctionalAdminCommands(base.PythonAPITestCase):
diff --git a/observabilityclient/utils/metric_utils.py b/observabilityclient/utils/metric_utils.py
index ba70b9a..6b1826b 100644
--- a/observabilityclient/utils/metric_utils.py
+++ b/observabilityclient/utils/metric_utils.py
@@ -68,7 +68,7 @@ def get_prometheus_client():
     if host is None or port is None:
         raise ConfigurationError("Can't find prometheus host and "
                                  "port configuration.")
-    client = PrometheusAPIClient(f"{host}:{port}")
+    client = PrometheusAPIClient(f"{host}:{port}")  # noqa: E231
     if ca_cert is not None:
         client.set_ca_cert(ca_cert)
     return client
diff --git a/tox.ini b/tox.ini
index ec7296b..06da827 100644
--- a/tox.ini
+++ b/tox.ini
@@ -14,7 +14,7 @@ passenv =
 	PROMETHEUS_*
 	OBSERVABILITY_*
 deps =
-    -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
+    -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/2025.1}
     -r{toxinidir}/requirements.txt
     -r{toxinidir}/test-requirements.txt