diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 68f1f58..d383aa5 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -46,7 +46,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: ["3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
         allow-failure: [false]
         test-case: [test-local]
         include:
diff --git a/CHANGES.rst b/CHANGES.rst
index aadaa0a..1c28021 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -6,6 +6,8 @@ Unreleased
 
 Changes:
 
+* Add Python 3.13 to CI and project setup.
+* Update docker base to `python:3.13.11-alpine3.23`.
 * Pin `requests>=2.32.5` and `urllib3>=2.6.0` for latest security vulnerability fixes.
 * Pin `requests>=2.32.4` to address security vulnerability
   (see `#143 <https://github.com/bird-house/twitcher/pull/143>`_).
diff --git a/Dockerfile b/Dockerfile
index 2f69e95..8638e37 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # vim:set ft=dockerfile:
-FROM python:3.11-alpine3.20
+FROM python:3.13.11-alpine3.23
 LABEL Description="Twitcher" Vendor="Birdhouse" Maintainer="https://github.com/bird-house/twitcher"
 
 # Configure hostname and ports for services
diff --git a/setup.py b/setup.py
index 6537a70..cb1794d 100644
--- a/setup.py
+++ b/setup.py
@@ -21,7 +21,7 @@
       long_description=README + '\n\n' + CHANGES,
       long_description_content_type="text/x-rst",
       classifiers=[
-          "Development Status :: 4 - Beta",
+          "Development Status :: 5 - Production/Stable",
           "Framework :: Pyramid",
           "Intended Audience :: Developers",
           "License :: OSI Approved :: Apache Software License",
@@ -32,6 +32,7 @@
           "Programming Language :: Python :: 3.10",
           "Programming Language :: Python :: 3.11",
           "Programming Language :: Python :: 3.12",
+          "Programming Language :: Python :: 3.13",
           "Topic :: Internet :: WWW/HTTP",
           "Topic :: Internet :: WWW/HTTP :: WSGI :: Application",
       ],