diff --git a/bot_bottle/backend/docker/backend.py b/bot_bottle/backend/docker/backend.py
index b332d594..807530f0 100644
--- a/bot_bottle/backend/docker/backend.py
+++ b/bot_bottle/backend/docker/backend.py
@@ -163,8 +163,12 @@ class DockerBottleBackend(BottleBackend["DockerBottlePlan", "DockerBottleCleanup
         return GatewayAttachResources(ca_pem=infra.gateway().ca_cert_pem())
 
     def _running_bottles(self) -> Sequence[str]:
+        from .infra import DockerInfraService
         from .infra_launch import running_agent_containers
-        return running_agent_containers()
+        infra = self._infra if self._infra is not None else DockerInfraService()
+        return running_agent_containers(
+            network=infra.network, gateway_name=infra.gateway().name,
+        )
 
     def _attach_bottle_to_gateway(
         self, bottle: str, resources: GatewayAttachResources,
diff --git a/tests/unit/test_backend_secret_reprovision.py b/tests/unit/test_backend_secret_reprovision.py
index 9a918838..a0b31b84 100644
--- a/tests/unit/test_backend_secret_reprovision.py
+++ b/tests/unit/test_backend_secret_reprovision.py
@@ -297,6 +297,16 @@ class TestDockerAttachPrimitives(unittest.TestCase):
         self.assertEqual("ITEST-CA", res.ca_pem)
         infra.gateway.assert_called_once()
 
+    def test_running_bottles_uses_the_threaded_infra_network(self) -> None:
+        from bot_bottle.backend.docker.backend import DockerBottleBackend
+        infra = Mock(network="itest-network")
+        infra.gateway.return_value.name = "itest-gateway"
+        with patch.object(docker, "running_agent_containers") as running:
+            DockerBottleBackend(infra=infra)._running_bottles()
+        running.assert_called_once_with(
+            network="itest-network", gateway_name="itest-gateway",
+        )
+
     def test_gateway_attach_resources_defaults_to_the_host_singleton(self) -> None:
         # Ordinary construction (no infra) falls back to the per-host default.
         from bot_bottle.backend.docker.backend import DockerBottleBackend