diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 9602883..ccae4ad 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -32,6 +32,7 @@ jobs:
           - '3.12'
           - '3.13'
           - '3.14'
+          - '3.15'
           - 'pypy-3.11'
         toxenv: [py]
         include:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 227d361..1564994 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 v3.4.0 (in development)
 -----------------------
-- Support Python 3.14
+- Support Python 3.14 and 3.15
 
 v3.3.0 (2025-06-27)
 -------------------
diff --git a/docs/changelog.rst b/docs/changelog.rst
index 1acbc22..7d4ae66 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -5,7 +5,7 @@ Changelog
 
 v3.4.0 (in development)
 -----------------------
-- Support Python 3.14
+- Support Python 3.14 and 3.15
 
 
 v3.3.0 (2025-06-27)
diff --git a/pyproject.toml b/pyproject.toml
index 2221e2a..fce10ba 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -33,6 +33,7 @@ classifiers = [
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
     "Programming Language :: Python :: 3.14",
+    "Programming Language :: Python :: 3.15",
     "Programming Language :: Python :: Implementation :: CPython",
     "Programming Language :: Python :: Implementation :: PyPy",
     "Framework :: Hatch",
diff --git a/tox.ini b/tox.ini
index 2cafb8a..97b6cce 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = lint,typing,py38,py39,py310,py311,py312,py313,py314,pypy3,py-oldsetup
+envlist = lint,typing,py38,py39,py310,py311,py312,py313,py314,py315,pypy3,py-oldsetup
 skip_missing_interpreters = True
 isolated_build = True
 minversion = 3.3.0