diff --git a/tests/http/federation/test_matrix_federation_agent.py b/tests/http/federation/test_matrix_federation_agent.py
index 8b5ad4574f..626acdcaa3 100644
--- a/tests/http/federation/test_matrix_federation_agent.py
+++ b/tests/http/federation/test_matrix_federation_agent.py
@@ -17,6 +17,7 @@ import logging
from mock import Mock
import treq
+from netaddr import IPSet
from service_identity import VerificationError
from zope.interface import implementer
@@ -103,6 +104,7 @@ class MatrixFederationAgentTests(unittest.TestCase):
reactor=self.reactor,
tls_client_options_factory=self.tls_factory,
user_agent="test-agent", # Note that this is unused since _well_known_resolver is provided.
+ ip_blacklist=IPSet(),
_srv_resolver=self.mock_resolver,
_well_known_resolver=self.well_known_resolver,
)
@@ -736,6 +738,7 @@ class MatrixFederationAgentTests(unittest.TestCase):
reactor=self.reactor,
tls_client_options_factory=tls_factory,
user_agent=b"test-agent", # This is unused since _well_known_resolver is passed below.
+ ip_blacklist=IPSet(),
_srv_resolver=self.mock_resolver,
_well_known_resolver=WellKnownResolver(
self.reactor,
|