diff --git a/tests/e2e/test_proxy_client.py b/tests/e2e/test_proxy_client.py
index 0c4aed5bd65..1ac0ed82782 100644
--- a/tests/e2e/test_proxy_client.py
+++ b/tests/e2e/test_proxy_client.py
@@ -389,6 +389,7 @@ class TestReplicasFor:
         )
         assert set(client.replicas_for("/key/info")) == {"http://backend"}
         assert set(client.replicas_for("/project/info")) == {"http://backend"}
+        assert set(client.replicas_for("/credentials/e2e-cred")) == {"http://backend"}
         assert set(client.replicas_for("/v1/models")) == {"http://gateway-1", "http://gateway-2"}
 
     def test_monolith_reads_management_routes_back_from_every_replica(self) -> None:
diff --git a/tests/e2e/transport.py b/tests/e2e/transport.py
index a3eec815441..6c795f2f631 100644
--- a/tests/e2e/transport.py
+++ b/tests/e2e/transport.py
@@ -307,6 +307,7 @@ CONTROL_PLANE_PREFIXES: tuple[str, ...] = (
     "/tag",
     "/budget",
     "/model/",
+    "/credentials",
     "/access_group",
     "/spend",
     "/global",