diff --git a/docs/source/reference/changelog.rst b/docs/source/reference/changelog.rst
index 5f0de0a1..a46813da 100644
--- a/docs/source/reference/changelog.rst
+++ b/docs/source/reference/changelog.rst
@@ -5,6 +5,7 @@ Changelog
 0.23.8 (UNRELEASED)
 ===================
 - Fixes a bug that caused duplicate markers in async tests `#813 <https://github.com/pytest-dev/pytest-asyncio/issues/813>`_
+- Declare support for Python 3.13
 
 Known issues
 ------------
diff --git a/setup.cfg b/setup.cfg
index 9fba05ae..9947cbe3 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -26,6 +26,7 @@ classifiers =
   Programming Language :: Python :: 3.10
   Programming Language :: Python :: 3.11
   Programming Language :: Python :: 3.12
+  Programming Language :: Python :: 3.13
 
   Topic :: Software Development :: Testing