diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index cd3c21d..b695a3b 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -73,6 +73,8 @@ jobs:
             py: "pypy-3.10"
           - toxenv: "pypy3.11"
             py: "pypy-3.11"
+          - toxenv: "pypy3.12"
+            py: "pypy-3.12"
     steps:
       - uses: actions/checkout@v7
       - name: Set up Python ${{ matrix.py }}
diff --git a/README.rst b/README.rst
index a91fde4..b6955f9 100644
--- a/README.rst
+++ b/README.rst
@@ -32,7 +32,7 @@ Compatibility
 -------------
 
 - CPython 3.8–3.15 (default tox envs).
-- PyPy 3.8–3.11 (run ``tox -e pypy3.8`` through ``tox -e pypy3.11`` locally; CI mirrors this matrix).
+- PyPy 3.8–3.12 (run ``tox -e pypy3.8`` through ``tox -e pypy3.12`` locally; CI mirrors this matrix).
 
 Usage
 -----
diff --git a/docs/index.rst b/docs/index.rst
index ab92c46..3ce9be5 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -36,7 +36,7 @@ Compatibility
 -------------
 
 - CPython 3.8–3.15 (default tox envs).
-- PyPy 3.8–3.11 (run ``tox -e pypy3.8`` through ``tox -e pypy3.11`` locally; CI mirrors this matrix).
+- PyPy 3.8–3.12 (run ``tox -e pypy3.8`` through ``tox -e pypy3.12`` locally; CI mirrors this matrix).
 
 Usage
 -----
diff --git a/tox.ini b/tox.ini
index 2bd3657..8e9738c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -16,6 +16,7 @@ envlist =
     pypy3.9,
     pypy3.10,
     pypy3.11,
+    pypy3.12,
     black,
     flake8,
     pyright,
@@ -39,7 +40,7 @@ python =
     pypy-3.9: pypy3.9
     pypy-3.10: pypy3.10
     pypy-3.11: pypy3.11
-
+    pypy-3.12: pypy3.12
 [testenv]
 deps =
     -rrequirements_dev.txt