diff --git a/api/ooniapi/probe_services.py b/api/ooniapi/probe_services.py
index 77c10dc9..6ef09578 100644
--- a/api/ooniapi/probe_services.py
+++ b/api/ooniapi/probe_services.py
@@ -579,7 +579,7 @@ def generate_test_helpers_conf() -> Dict:
     conf["web-connectivity"] = random_web_test_helpers(
         [
             "https://0.th.ooni.org",
-            "https://3.th.ooni.org",
+            "https://6.th.ooni.org",
             "https://4.th.ooni.org",
         ]
     )