diff --git a/src/__tests__/e2e-measurement-gating-guard.test.ts b/src/__tests__/e2e-measurement-gating-guard.test.ts
index 6f4970f75..407cc7728 100644
--- a/src/__tests__/e2e-measurement-gating-guard.test.ts
+++ b/src/__tests__/e2e-measurement-gating-guard.test.ts
@@ -34,6 +34,11 @@ const E2E_DIR = resolve(__dirname, "../../e2e");
  * wrong question and should be rethought rather than extended.
  */
 const ALLOWLIST: ReadonlyArray<{ file: string; test: string; why: string }> = [
+  {
+    file: "vaccinations.spec.ts",
+    test: "the list and the capture form carry no serious accessibility violations",
+    why: "The evaluate after the goto reads no DOM: it issues the seed POST from the page's own origin so the row is written over the browser's socket rather than the runner's shared keep-alive agent, which handed POSTs to sockets the server had already closed. The scan that follows is gated on the reloaded list.",
+  },
   {
     file: "ipad-viewport.spec.ts",
     test: "no horizontal overflow and full-width content on",