diff --git a/.github/workflows/ci-cd.yml b/.github/workflows/ci-cd.yml
index 2aedefe668..309826581d 100644
--- a/.github/workflows/ci-cd.yml
+++ b/.github/workflows/ci-cd.yml
@@ -728,6 +728,7 @@ jobs:
         # NOTE: The latest and the lowest supported Pythons are prioritized
         # NOTE: to improve the responsiveness. It's nice to see the most
         # NOTE: important results first.
+        - 3.14
         - 3.13
         - 3.8
         - pypy-3.11
@@ -736,7 +737,6 @@ jobs:
         - >-
           3.10
         - 3.9
-        - ~3.14.0-0
         runner-vm-os:
         - ubuntu-24.04-arm
         - ubuntu-24.04
diff --git a/.github/workflows/pip-tools.yml b/.github/workflows/pip-tools.yml
index 7c516ad25d..5be3f1a41e 100644
--- a/.github/workflows/pip-tools.yml
+++ b/.github/workflows/pip-tools.yml
@@ -58,6 +58,7 @@ jobs:
         # NOTE: The latest and the lowest supported Pythons are prioritized
         # NOTE: to improve the responsiveness. It's nice to see the most
         # NOTE: important results first.
+        - 3.14
         - 3.13
         - 3.8
         - pypy-3.11
@@ -66,7 +67,6 @@ jobs:
         - >-
           3.10
         - 3.9
-        - ~3.14.0-0
         os:
         - ubuntu-24.04-arm
         - macOS-15  # arm64
diff --git a/docs/changelog-fragments.d/767.contrib.rst b/docs/changelog-fragments.d/767.contrib.rst
new file mode 100644
index 0000000000..09bdad79c2
--- /dev/null
+++ b/docs/changelog-fragments.d/767.contrib.rst
@@ -0,0 +1,3 @@
+Tests: copied and adapted Python 3.13 filter warning for Python 3.14, to match
+the new syntax.
+-- by :user:`mr-c`.
diff --git a/docs/changelog-fragments.d/767.doc.rst b/docs/changelog-fragments.d/767.doc.rst
new file mode 100644
index 0000000000..301d39025a
--- /dev/null
+++ b/docs/changelog-fragments.d/767.doc.rst
@@ -0,0 +1,2 @@
+Declared Python version 3.14 as officially supported
+-- by :user:`mr-c`.
diff --git a/pyproject.toml b/pyproject.toml
index b668f175a5..04787b6a4c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,6 +29,7 @@ classifiers = [
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: 3.13",
+  "Programming Language :: Python :: 3.14",
   "Programming Language :: Python :: Implementation",
   "Programming Language :: Python :: Implementation :: CPython",
   "Programming Language :: Python :: Implementation :: Jython",
diff --git a/pytest.ini b/pytest.ini
index 6586702144..8df4cb2ffb 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -61,6 +61,8 @@ filterwarnings =
   # FIXME: which exposed a possible race condition in test_conn test cleanup.
   # Ref: https://github.com/cherrypy/cheroot/issues/734
   ignore:Exception ignored in. <function IOBase.__del__:pytest.PytestUnraisableExceptionWarning
+  # Python 3.14 version of the above
+  ignore:Exception ignored while calling deallocator <function IOBase.__del__ at:pytest.PytestUnraisableExceptionWarning
 
 # https://docs.pytest.org/en/stable/usage.html#creating-junitxml-format-files
 junit_duration_report = call