diff --git a/src/features/hijack-alerts/__tests__/detector.test.ts b/src/features/hijack-alerts/__tests__/detector.test.ts
index a11bff4..0e2a5e0 100644
--- a/src/features/hijack-alerts/__tests__/detector.test.ts
+++ b/src/features/hijack-alerts/__tests__/detector.test.ts
@@ -210,8 +210,10 @@ describe('Hijack Detector', () => {
       const elapsed = Date.now() - startTime
 
       expect(result).toBe(baseDesc)
-      // AbortController timeout should trigger around 5-6 seconds
-      expect(elapsed).toBeGreaterThanOrEqual(5000)
+      // AbortController timeout should trigger around 5-6 seconds. A few ms
+      // of tolerance below 5000 absorbs normal setTimeout/Date.now() jitter
+      // between the two clock reads (observed flake: 4999ms).
+      expect(elapsed).toBeGreaterThanOrEqual(4990)
       expect(elapsed).toBeLessThan(7000)
     }, { timeout: 10000 })