diff --git a/test/qa-evidence.test.ts b/test/qa-evidence.test.ts
index 3707751d8..04097731d 100644
--- a/test/qa-evidence.test.ts
+++ b/test/qa-evidence.test.ts
@@ -535,15 +535,23 @@ test('post-repair required probes count only captures started after the last fix
   const [duplicate, partial] = [probe('console.log(JSON.stringify({scenario:"duplicate"}))'), probe('console.log(JSON.stringify({scenario:"partial"}))')];
   const env = { ...process.env, GSTACK_QA_REQUIRED_PROBES: JSON.stringify([duplicate.join(' '), partial.join(' ')]),
     GSTACK_QA_REQUIRED_AFTER_EDIT: JSON.stringify({ paths: [src], since: new Date(Date.now() - 30_000).toISOString() }) };
+  let last: Record<string, unknown> = {};
   const capture = (captureId: string, argv: string[]) => {
     const after = captureId === '001' ? [] : ['--after', String(Number(captureId) - 1).padStart(3, '0'), '--hypothesis', 'The previous scenario result shows which invariant the next probe must check.'];
     const result = spawnSync(process.execPath, [CLI, 'capture', f.root, captureId, '--timeout-ms', '4000', ...after, '--', ...argv], { cwd: f.root, encoding: 'utf8', timeout: 10_000, env });
     expect(result.status, result.stderr).toBe(0);
-    return receipt(result.stdout).requiredRemaining as string[];
+    last = receipt(result.stdout);
+    return last.requiredRemaining as string[];
   };
   expect(capture('001', duplicate)).toEqual([duplicate.join(' '), partial.join(' ')]);
   expect(capture('002', partial)).toEqual([duplicate.join(' '), partial.join(' ')]);
+  // The edit's mtime is pinned to capture 002's completion: a real write's mtime comes from the kernel's coarse clock,
+  // which lags Date.now() by up to a tick, while 002 started only one child run (a few ms on a fast machine) earlier;
+  // the GPT voice's run on 51f1e02 counted 002 as post-edit that way. 002 started before this instant and 003 after it.
+  const edit = new Date(Date.parse(String(last.completedAt)));
+  expect(Date.parse(String(last.startedAt))).toBeLessThan(edit.getTime());
   fs.writeFileSync(path.join(src, 'worker.ts'), 'export const effect = 2;\n');
+  fs.utimesSync(path.join(src, 'worker.ts'), edit, edit);
   expect(capture('003', duplicate)).toEqual([partial.join(' ')]);
   expect(capture('004', partial)).toEqual([]);
   const secondEdit = new Date(Date.now() + 60_000);