diff --git a/bot_bottle/backend/docker/compose.py b/bot_bottle/backend/docker/compose.py
index 16a67d4..9ad0011 100644
--- a/bot_bottle/backend/docker/compose.py
+++ b/bot_bottle/backend/docker/compose.py
@@ -134,7 +134,7 @@ def _sidecar_bundle_service(plan: DockerBottlePlan) -> dict[str, Any]:
     ep = plan.egress_plan
     volumes.append(_bind(ep.mitmproxy_ca_host_path, EGRESS_CA_IN_CONTAINER))
     if ep.routes:
-        volumes.append(_bind(ep.routes_path, EGRESS_ROUTES_IN_CONTAINER))
+        volumes.append(_bind(ep.routes_path.parent, str(Path(EGRESS_ROUTES_IN_CONTAINER).parent)))
         for token_env in sorted(ep.token_env_map.keys()):
             env.append(token_env)
 
diff --git a/bot_bottle/backend/smolmachines/launch.py b/bot_bottle/backend/smolmachines/launch.py
index 7bf891a..a1d0925 100644
--- a/bot_bottle/backend/smolmachines/launch.py
+++ b/bot_bottle/backend/smolmachines/launch.py
@@ -308,7 +308,7 @@ def _bundle_launch_spec(
     ep = plan.egress_plan
     volumes.append((str(ep.mitmproxy_ca_host_path), EGRESS_CA_IN_CONTAINER, True))
     if ep.routes:
-        volumes.append((str(ep.routes_path), EGRESS_ROUTES_IN_CONTAINER, True))
+        volumes.append((str(ep.routes_path.parent), str(Path(EGRESS_ROUTES_IN_CONTAINER).parent), True))
         # Bare-name entries for upstream-token slots. Their values
         # come from the docker-run subprocess env (inherited from
         # the operator's shell), never landing on argv.
diff --git a/tests/unit/test_compose.py b/tests/unit/test_compose.py
index cad8840..8b10eec 100644
--- a/tests/unit/test_compose.py
+++ b/tests/unit/test_compose.py
@@ -392,7 +392,7 @@ class TestSidecarBundleShape(unittest.TestCase):
             "services"]["sidecars"]
         targets = {v["target"] for v in sc["volumes"]}
         self.assertIn("/home/mitmproxy/.mitmproxy/mitmproxy-ca.pem", targets)
-        self.assertIn("/etc/egress/routes.yaml", targets)
+        self.assertIn("/etc/egress", targets)
         self.assertIn("/git-gate-entrypoint.sh", targets)
         self.assertIn("/git-gate/creds/upstream-known_hosts", targets)
         self.assertTrue(any("supervise/queue" in t or t.startswith("/run/supervise")