diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 2889c2f13..040412785 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -52,7 +52,7 @@ jobs:
                   "3.11",
                   "3.12",
                   "3.13",
-                  "3.14-dev",
+                  "3.14",
               }
           }
           # TODO: List of additional variants to include in the matrix.
@@ -63,10 +63,12 @@ jobs:
 
           # List of unstable criterions.
           unstable: list[dict[str, str]] = [
-              # XXX error: Python 3.14 is still not available through uv, which gets its standalone Python executables
-              # from the python-build-standalone project:
-              # https://github.com/astral-sh/python-build-standalone/releases
-              {"python-version": "3.14-dev"},
+              # XXX Python 3.14.0a3 is not available for Windows yet:
+              # https://github.com/astral-sh/python-build-standalone/releases/tag/20250106
+              # https://github.com/astral-sh/python-build-standalone/pull/478
+              # https://github.com/astral-sh/python-build-standalone/pull/443
+              {"python-version": "3.14", "os": "windows-2022"},
+              {"python-version": "3.14", "os": "windows-2019"},
           ]
 
           # Build the job matrix.
diff --git a/changelog.md b/changelog.md
index 9820f120a..bebdd88bb 100644
--- a/changelog.md
+++ b/changelog.md
@@ -6,6 +6,7 @@
 > This version is not released yet and is under active development.
 
 - Replace unmaintained `jsonlint` by ESLint.
+- Activate mark Python 3.14-dev tests as stable on Linux and macOS.
 
 ## [4.9.0 (2024-12-27)](https://github.com/kdeldycke/workflows/compare/v4.8.4...v4.9.0)
 
diff --git a/pyproject.toml b/pyproject.toml
index 7feb30988..acc453f66 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -46,6 +46,7 @@ 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 :: CPython',
     'Programming Language :: Unix Shell',
     'Topic :: Documentation :: Sphinx',