diff --git a/ab-testing/config/abTests.ts b/ab-testing/config/abTests.ts
index 2efeabe4a67..97e60a89898 100644
--- a/ab-testing/config/abTests.ts
+++ b/ab-testing/config/abTests.ts
@@ -187,10 +187,10 @@ const ABTests: ABTest[] = [
 		name: "commercial-prebid-failsafe-timeout",
 		description: "Gradually roll out the Prebid failsafe timeout feature",
 		owners: ["commercial.dev@guardian.co.uk"],
-		expirationDate: "2026-09-30",
+		expirationDate: "2026-10-28",
 		type: "client",
 		status: "ON",
-		audienceSize: 10 / 100,
+		audienceSize: 0 / 100,
 		audienceSpace: "B",
 		groups: ["control", "variant"],
 		shouldForceMetricsCollection: true,