diff --git a/tests/integration/compatibility/test_codex_catalog_fetch.py b/tests/integration/compatibility/test_codex_catalog_fetch.py
index 41fcd728a0c..618e98aa177 100644
--- a/tests/integration/compatibility/test_codex_catalog_fetch.py
+++ b/tests/integration/compatibility/test_codex_catalog_fetch.py
@@ -136,7 +136,7 @@ def test_a_release_openai_serves_is_fetched_from_openai_with_the_deployment_key_
 ) -> None:
     assert OPENAI_SLUG not in _vendored_slugs()
     with gateway.scenario() as scenario:
-        scenario.model(name=OPENAI_SLUG)
+        scenario.model(name=OPENAI_SLUG, api_base="https://api.openai.com/v1")
         listing: Final = _catalog_listing(gateway, OPENAI_VERSION, OPENAI_SLUG)
         expected: Final = {
             **_openai_entry(),