diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 6fb57df..db39316 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -37,7 +37,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python: ["3.10", "3.11", "3.12", "3.13", "3.14"]
+        python: ["3.10", "3.11", "3.12", "3.13", "3.14", "3.15"]
         os: [ubuntu-latest, windows-latest]
         tox_env: ["py"]
         include:
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 6836013..46d1677 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -7,6 +7,7 @@ Unreleased
 * `#547 <https://github.com/pytest-dev/pytest-mock/issues/547>`_: Added ``SpyType`` for annotating ``mocker.spy`` results.
 * Dropped support for EOL Python 3.9.
 * `#147 <https://github.com/pytest-dev/pytest-mock/issues/147>`_: Removed handling of ``RuntimeError: stop called on unstarted patcher``, which can no longer occur in the supported Python versions.
+* Added support for Python 3.15.
 
 3.15.1
 ------
diff --git a/pyproject.toml b/pyproject.toml
index b4bccea..d5ae660 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,6 +32,7 @@ classifiers = [
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
     "Programming Language :: Python :: 3.14",
+    "Programming Language :: Python :: 3.15",
     "Topic :: Software Development :: Testing",
 ]
 
diff --git a/tox.ini b/tox.ini
index 8cba4ca..89fd5eb 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 minversion = 3.5.3
-envlist = py{310,311,312,313,314}, norewrite, pytest6
+envlist = py{310,311,312,313,314,315}, norewrite, pytest6
 
 [testenv]
 deps =