diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 0ff07c9d..7bd39213 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -53,7 +53,7 @@ jobs:
       with:
         platforms: all
     - name: Build wheels
-      uses: pypa/cibuildwheel@v2.22.0
+      uses: pypa/cibuildwheel@v3.0.1
       env:
         BUILD_EXTENSION: yes
     - name: Save wheels
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index f6a77bce..bbe91fc6 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -59,6 +59,7 @@ jobs:
           - "3.11"
           - "3.12"
           - "3.13"
+          - "3.14"
           - "pypy-3.10"
         is_main:
           - ${{ github.event_name == 'push' && github.ref == 'refs/heads/main' }}
diff --git a/docs/project/changelog.rst b/docs/project/changelog.rst
index 5bab483e..f7f525c5 100644
--- a/docs/project/changelog.rst
+++ b/docs/project/changelog.rst
@@ -40,6 +40,11 @@ Backwards-incompatible changes
 
     websockets 15.0 is the last version supporting Python 3.9.
 
+New features
+............
+
+* Validated compatibility with Python 3.14.
+
 Improvements
 ............
 
diff --git a/pyproject.toml b/pyproject.toml
index d9f31b8c..ae26643a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,6 +23,7 @@ classifiers = [
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3.14",
 ]
 dynamic = ["version", "readme"]
 
diff --git a/tests/legacy/utils.py b/tests/legacy/utils.py
index 20b0191f..bbbb34fa 100644
--- a/tests/legacy/utils.py
+++ b/tests/legacy/utils.py
@@ -1,5 +1,6 @@
 import asyncio
 import functools
+import inspect
 import sys
 import unittest
 
@@ -23,7 +24,7 @@ def __init_subclass__(cls, **kwargs):
         super().__init_subclass__(**kwargs)
         for name in unittest.defaultTestLoader.getTestCaseNames(cls):
             test = getattr(cls, name)
-            if asyncio.iscoroutinefunction(test):
+            if inspect.iscoroutinefunction(test):
                 setattr(cls, name, cls.convert_async_to_sync(test))
 
     @staticmethod
diff --git a/tox.ini b/tox.ini
index bfd753b3..aa88b059 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,6 +4,7 @@ env_list =
     py311
     py312
     py313
+    py314
     coverage
     ruff
     mypy
@@ -14,8 +15,8 @@ commands =
 pass_env =
     WEBSOCKETS_*
 deps =
-    py311,py312,py313,coverage,maxi_cov: mitmproxy
-    py311,py312,py313,coverage,maxi_cov: python-socks[asyncio]
+    py311,py312,py313,py314,coverage,maxi_cov: mitmproxy
+    py311,py312,py313,py314,coverage,maxi_cov: python-socks[asyncio]
     werkzeug
 
 [testenv:coverage]