diff --git a/.github/workflows/mypy.yml b/.github/workflows/mypy.yml
index ea0b4e5..4c22a52 100644
--- a/.github/workflows/mypy.yml
+++ b/.github/workflows/mypy.yml
@@ -20,7 +20,7 @@ jobs:
 
     strategy:
       matrix:
-        os: ['ubuntu-22.04', 'windows-2019']
+        os: ['ubuntu-22.04', 'windows-2022']
       fail-fast: false
 
     steps:
diff --git a/.github/workflows/python_ci.yml b/.github/workflows/python_ci.yml
index 7a15a62..d7b65cc 100644
--- a/.github/workflows/python_ci.yml
+++ b/.github/workflows/python_ci.yml
@@ -18,8 +18,8 @@ permissions:
 
 jobs:
   tests:
-    name: "windows-2019 / Python ${{ matrix.config.python-version }}"
-    runs-on: "windows-2019"
+    name: "windows-2022 / Python ${{ matrix.config.python-version }}"
+    runs-on: "windows-2022"
     continue-on-error: ${{ matrix.config.experimental }}
     env:
       USING_COVERAGE: '3.7,3.8,3.9,3.10,3.11,3.12,3.13,pypy-3.7,pypy-3.8,pypy-3.9'
diff --git a/.github/workflows/python_ci_linux.yml b/.github/workflows/python_ci_linux.yml
index 84e0dcf..c68d7c1 100644
--- a/.github/workflows/python_ci_linux.yml
+++ b/.github/workflows/python_ci_linux.yml
@@ -35,7 +35,7 @@ jobs:
           - {python-version: "3.10", testenvs: "py310,build", experimental: False}
           - {python-version: "3.11", testenvs: "py311,build", experimental: False}
           - {python-version: "3.12", testenvs: "py312,build", experimental: False}
-          - {python-version: "3.13", testenvs: "py313-dev,build", experimental: True}
+          - {python-version: "3.13", testenvs: "py313,build", experimental: False}
           - {python-version: "pypy-3.7", testenvs: "pypy37,build", experimental: False}
           - {python-version: "pypy-3.8", testenvs: "pypy38,build", experimental: False}
           - {python-version: "pypy-3.9", testenvs: "pypy39,build", experimental: True}
diff --git a/.github/workflows/python_ci_macos.yml b/.github/workflows/python_ci_macos.yml
index 09a2488..2380917 100644
--- a/.github/workflows/python_ci_macos.yml
+++ b/.github/workflows/python_ci_macos.yml
@@ -34,7 +34,7 @@ jobs:
           - {python-version: "3.10", os-ver: "14", testenvs: "py310,build", experimental: False}
           - {python-version: "3.11", os-ver: "14", testenvs: "py311,build", experimental: False}
           - {python-version: "3.12", os-ver: "14", testenvs: "py312,build", experimental: False}
-          - {python-version: "3.13", os-ver: "14", testenvs: "py313-dev,build", experimental: True}
+          - {python-version: "3.13", os-ver: "14", testenvs: "py313,build", experimental: False}
           - {python-version: "pypy-3.7", os-ver: "13", testenvs: "pypy37,build", experimental: False}
           - {python-version: "pypy-3.8", os-ver: "14", testenvs: "pypy38,build", experimental: False}
           - {python-version: "pypy-3.9", os-ver: "14", testenvs: "pypy39,build", experimental: True}
diff --git a/pyproject.toml b/pyproject.toml
index 2a65da4..916b8a2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,7 +32,7 @@ base-classifiers = [
     "Topic :: Software Development :: Testing :: Unit",
     "Typing :: Typed",
 ]
-python-versions = [ "3.7", "3.8", "3.9", "3.10", "3.11", "3.12",]
+python-versions = [ "3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13",]
 python-implementations = [ "CPython", "PyPy",]
 platforms = [ "Windows", "macOS", "Linux",]
 license-key = "MIT"
diff --git a/tox.ini b/tox.ini
index dd7b5c0..dd32eec 100644
--- a/tox.ini
+++ b/tox.ini
@@ -26,7 +26,7 @@ envlist =
     py310
     py311
     py312
-    py313-dev
+    py313
     pypy37
     pypy38
     pypy39
@@ -41,17 +41,7 @@ requires =
     virtualenv!=20.16.0
 
 [envlists]
-test =
-    py37
-    py38
-    py39
-    py310
-    py311
-    py312
-    py313-dev
-    pypy37
-    pypy38
-    pypy39
+test = py37, py38, py39, py310, py311, py312, py313, pypy37, pypy38, pypy39
 qa = mypy, lint
 
 [testenv]
@@ -69,12 +59,11 @@ setenv =
     PYTHONDEVMODE=1
     PIP_DISABLE_PIP_VERSION_CHECK=1
 
-[testenv:py313-dev]
+[testenv:py313]
 download = True
 setenv =
     PYTHONDEVMODE=1
     PIP_DISABLE_PIP_VERSION_CHECK=1
-    UNSAFE_PYO3_SKIP_VERSION_CHECK=1
 
 [testenv:py312]
 download = True