diff --git a/internal/api/server_test.go b/internal/api/server_test.go
index bdcb91b6..fb1c202a 100644
--- a/internal/api/server_test.go
+++ b/internal/api/server_test.go
@@ -1584,7 +1584,7 @@ func TestModelsWithClientVersionReturnsCodexCatalog(t *testing.T) {
 	if got, _ := custom["context_window"].(float64); got != 123456 {
 		t.Fatalf("custom context_window = %v, want 123456", custom["context_window"])
 	}
-	assertCodexSupportedReasoningLevels(t, custom, []string{"none", "low", "medium", "high", "xhigh"})
+	assertCodexSupportedReasoningLevels(t, custom, []string{"none", "minimal", "low", "medium", "high", "xhigh"})
 	if custom["base_instructions"] != gpt55["base_instructions"] {
 		t.Fatal("expected custom model to use gpt-5.5 base_instructions fallback")
 	}