diff --git a/bin/tests/system/notify/ans6/ans.py b/bin/tests/system/notify/ans6/ans.py
deleted file mode 100644
index 6f5346ff86..0000000000
--- a/bin/tests/system/notify/ans6/ans.py
+++ /dev/null
@@ -1,25 +0,0 @@
-# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
-#
-# SPDX-License-Identifier: MPL-2.0
-#
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0.  If a copy of the MPL was not distributed with this
-# file, you can obtain one at https://mozilla.org/MPL/2.0/.
-#
-# See the COPYRIGHT file distributed with this work for additional
-# information regarding copyright ownership.
-
-from isctest.asyncserver import (
-    AsyncDnsServer,
-    IgnoreAllQueries,
-)
-
-
-def main() -> None:
-    server = AsyncDnsServer()
-    server.install_response_handler(IgnoreAllQueries())
-    server.run()
-
-
-if __name__ == "__main__":
-    main()
diff --git a/bin/tests/system/notify/ns3/named.conf.j2 b/bin/tests/system/notify/ns3/named.conf.j2
index 2e9ea66071..756ec746fc 100644
--- a/bin/tests/system/notify/ns3/named.conf.j2
+++ b/bin/tests/system/notify/ns3/named.conf.j2
@@ -45,7 +45,7 @@ zone "example" {
 	primaries { 10.53.0.2; };
 	file "example.bk";
 	# non-responsive notify recipient (no reply, no ICMP errors)
-	also-notify { 10.53.0.6; };
+	also-notify { 10.53.10.53; };
 };
 
 zone "notify-source-port-test" {
diff --git a/bin/tests/system/notify/tests.sh b/bin/tests/system/notify/tests.sh
index d83f5cbee0..3beb52ae9a 100644
--- a/bin/tests/system/notify/tests.sh
+++ b/bin/tests/system/notify/tests.sh
@@ -222,7 +222,7 @@ grep "sending notify(SOA) to 10.53.0.5#[0-9]* : TSIG (b)" ns5/named.run >/dev/nu
 grep "sending notify(SOA) to 10.53.0.5#[0-9]* : TSIG (c)" ns5/named.run >/dev/null || ret=1
 test_end
 
-# notify messages were sent to unresponsive 10.53.0.6 during the tests
+# notify messages were sent to unresponsive 10.53.10.53 during the tests
 # above, which should time out at some point; we need to wait for them to
 # appear in the logs in case the tests run faster than the notify timeouts
 
diff --git a/bin/tests/system/notify/tests_sh_notify.py b/bin/tests/system/notify/tests_sh_notify.py
index ebdbd0a28b..74c626b76b 100644
--- a/bin/tests/system/notify/tests_sh_notify.py
+++ b/bin/tests/system/notify/tests_sh_notify.py
@@ -11,10 +11,6 @@
 
 import pytest
 
-# isctest.asyncserver requires dnspython >= 2.0.0
-pytest.importorskip("dns", minversion="2.0.0")
-
-
 pytestmark = pytest.mark.extra_artifacts(
     [
         "awk.out.*",
@@ -32,7 +28,6 @@ pytestmark = pytest.mark.extra_artifacts(
         "ns5/x21.bk-c",
         "ns5/x21.bk-c.jnl",
         "ns5/x21.db.jnl",
-        "ans6/ans.run",
     ]
 )