diff --git a/tests/unit/provider-node-reserved-prefix.test.ts b/tests/unit/provider-node-reserved-prefix.test.ts
index ae1f0b15a0..f5ff0ac6de 100644
--- a/tests/unit/provider-node-reserved-prefix.test.ts
+++ b/tests/unit/provider-node-reserved-prefix.test.ts
@@ -182,6 +182,9 @@ test("shared set size includes live REGISTRY and retired Designer + Felo + Qwen
   // #11786: SeekAi adds id "seekai" + alias "ska" (406 → 408).
   // #13024 (2b9e7fb3e) GreenPT and #13025 (22473dee5) EURouter each add one REGISTRY member (id ==
   // alias); #13277 (02128f334) registers Arcee AI, adding id "arcee-ai" + alias "arcee" (408 → 412).
+  // #13399 registers Agnes CN, adding id "agnes-cn" + alias "agnescn" (412 → 414); #13131 retires
+  // `chipotle`/`pepper` (dead upstream), removing its id "chipotle" + alias "pepper" from the
+  // REGISTRY walk (414 → 412) — the two land back on the same total.
   assert.equal(RESERVED_PREFIX_COUNT, 412);
 });