diff --git a/tests/scripts/thread-cert/border_router/test_advertising_proxy.py b/tests/scripts/thread-cert/border_router/test_advertising_proxy.py
index 5c25b0713..28e093e36 100755
--- a/tests/scripts/thread-cert/border_router/test_advertising_proxy.py
+++ b/tests/scripts/thread-cert/border_router/test_advertising_proxy.py
@@ -140,7 +140,7 @@ class SingleHostAndService(thread_cert.TestCase):
         #
 
         client.srp_client_set_host_address('2001::2')
-        self.simulator.go(2)
+        self.simulator.go(8)
 
         self.check_host_and_service(server, client, '2001::2')
         self.host_check_mdns_service(host, '2001::2')