diff --git a/tests/browser/slow_reset_watch.py b/tests/browser/slow_reset_watch.py
index d2c07009..a3f6a6c8 100644
--- a/tests/browser/slow_reset_watch.py
+++ b/tests/browser/slow_reset_watch.py
@@ -114,10 +114,16 @@ def thread_stacks() -> list[str]:
     Formatting sys._current_frames() showed a thread blocked in SQLite as idle
     (Python 3.14); faulthandler reports where each thread really is.
     """
+    # Before Python 3.14 faulthandler prints ids only; name each id here.
+    names = [
+        f"thread 0x{thread.ident:016x} is {thread.name}"
+        for thread in threading.enumerate()
+        if thread.ident is not None
+    ]
     with tempfile.TemporaryFile() as dump:
         faulthandler.dump_traceback(file=dump, all_threads=True)
         dump.seek(0)
-        return dump.read().decode("utf-8", "replace").splitlines()
+        return [*names, *dump.read().decode("utf-8", "replace").splitlines()]
 
 
 def executor_state(loop: asyncio.AbstractEventLoop) -> list[str]:
diff --git a/tests/test_browser_slow_reset_watch.py b/tests/test_browser_slow_reset_watch.py
index 9a5626b9..bb24c53b 100644
--- a/tests/test_browser_slow_reset_watch.py
+++ b/tests/test_browser_slow_reset_watch.py
@@ -71,7 +71,7 @@ class TestResetWatch(unittest.TestCase):
         text = "\n".join(report)
         self.assertIn("POST /__test__/reset still running after", text)
         self.assertIn("database: 1 connections", text)
-        self.assertIn("[held-up]", text)
+        self.assertIn(f"thread 0x{worker.ident:016x} is held-up", text)
         self.assertIn("in blocked_here", text)
 
         watch.record_call("seed", 0.25, 1.5)