diff --git a/postgres-appliance/scripts/callback_role.py b/postgres-appliance/scripts/callback_role.py
index b0d482834..369064ae6 100755
--- a/postgres-appliance/scripts/callback_role.py
+++ b/postgres-appliance/scripts/callback_role.py
@@ -14,7 +14,7 @@
 KUBE_TOKEN_FILENAME = KUBE_SERVICE_DIR + 'token'
 KUBE_CA_CERT = KUBE_SERVICE_DIR + 'ca.crt'
 
-KUBE_API_URL = 'https://kubernetes.default.svc.cluster.local/api/v1/namespaces'
+KUBE_API_URL = os.environ.get('KUBERNETES_SERVICE_HOST', 'https://kubernetes.default.svc.cluster.local') + '/api/v1/namespaces'
 
 logger = logging.getLogger(__name__)
 
@@ -94,4 +94,4 @@ def main():
 
 
 if __name__ == '__main__':
-    main()
+    main()
\ No newline at end of file