diff --git a/tools/daemon_pool.py b/tools/daemon_pool.py
index 2fb5a61d0a24..5e44fff5d07e 100644
--- a/tools/daemon_pool.py
+++ b/tools/daemon_pool.py
@@ -26,6 +26,7 @@
 
 from __future__ import annotations
 
+import sys
 import threading
 import weakref
 from concurrent.futures import ThreadPoolExecutor
@@ -38,8 +39,10 @@ class DaemonThreadPoolExecutor(ThreadPoolExecutor):
     """ThreadPoolExecutor variant whose workers do not block process exit."""
 
     def _adjust_thread_count(self) -> None:
-        # Mirrors CPython's implementation (3.8–3.13) with two changes:
+        # Mirrors CPython's implementation with two changes:
         # daemon=True and no _threads_queues registration.
+        # Python 3.14 removed _initializer / _initargs, replacing them
+        # with _create_worker_context() and a 3-arg _worker signature.
         if self._idle_semaphore.acquire(timeout=0):
             return
 
@@ -49,15 +52,23 @@ def weakref_cb(_, q=self._work_queue):
         num_threads = len(self._threads)
         if num_threads < self._max_workers:
             thread_name = "%s_%d" % (self._thread_name_prefix or self, num_threads)
-            t = threading.Thread(
-                name=thread_name,
-                target=_worker,
-                args=(
+            if sys.version_info >= (3, 14):
+                worker_args = (
+                    weakref.ref(self, weakref_cb),
+                    self._create_worker_context(),
+                    self._work_queue,
+                )
+            else:
+                worker_args = (
                     weakref.ref(self, weakref_cb),
                     self._work_queue,
                     self._initializer,
                     self._initargs,
-                ),
+                )
+            t = threading.Thread(
+                name=thread_name,
+                target=_worker,
+                args=worker_args,
                 daemon=True,
             )
             t.start()