diff --git a/test_runner/performance/test_compute_startup.py b/test_runner/performance/test_compute_startup.py
index abedb4be27..5c36982c93 100644
--- a/test_runner/performance/test_compute_startup.py
+++ b/test_runner/performance/test_compute_startup.py
@@ -3,7 +3,6 @@ from __future__ import annotations
 from typing import TYPE_CHECKING
 
 import pytest
-import requests
 from fixtures.benchmark_fixture import MetricReport, NeonBenchmarker
 
 if TYPE_CHECKING:
@@ -68,9 +67,7 @@ def test_compute_startup_simple(
             endpoint.safe_psql("select 1;")
 
         # Get metrics
-        metrics = requests.get(
-            f"http://localhost:{endpoint.external_http_port}/metrics.json"
-        ).json()
+        metrics = endpoint.http_client().metrics_json()
         durations = {
             "wait_for_spec_ms": f"{i}_wait_for_spec",
             "sync_safekeepers_ms": f"{i}_sync_safekeepers",
@@ -155,9 +152,7 @@ def test_compute_ondemand_slru_startup(
             assert sum == 1000000
 
         # Get metrics
-        metrics = requests.get(
-            f"http://localhost:{endpoint.external_http_port}/metrics.json"
-        ).json()
+        metrics = endpoint.http_client().metrics_json()
         durations = {
             "wait_for_spec_ms": f"{slru}_{i}_wait_for_spec",
             "sync_safekeepers_ms": f"{slru}_{i}_sync_safekeepers",