diff --git a/.editorconfig b/.editorconfig
index c5508b9..e4b8673 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -1,8 +1,8 @@
-# Generated from:
-# https://github.com/zopefoundation/meta/tree/master/config/pure-python
+# Generated with zope.meta (https://zopemeta.readthedocs.io/) from:
+# https://github.com/zopefoundation/meta/tree/master/src/zope/meta/pure-python
 #
 # EditorConfig Configuration file, for more details see:
-# http://EditorConfig.org
+# https://EditorConfig.org
 # EditorConfig is a convention description, that could be interpreted
 # by multiple editors to enforce common coding conventions for specific
 # file types
@@ -12,7 +12,7 @@
 root = true
 
 
-[*]  # For All Files
+[*]
 # Unix-style newlines with a newline ending every file
 end_of_line = lf
 insert_final_newline = true
diff --git a/.github/workflows/pre-commit.yml b/.github/workflows/pre-commit.yml
index bf22c0a..8a1cde6 100644
--- a/.github/workflows/pre-commit.yml
+++ b/.github/workflows/pre-commit.yml
@@ -1,5 +1,5 @@
-# Generated from:
-# https://github.com/zopefoundation/meta/tree/master/config/pure-python
+# Generated with zope.meta (https://zopemeta.readthedocs.io/) from:
+# https://github.com/zopefoundation/meta/tree/master/src/zope/meta/pure-python
 name: pre-commit
 
 on:
@@ -21,10 +21,10 @@ jobs:
     name: linting
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: actions/setup-python@v6
       with:
-        python-version: 3.x
+        python-version: '3.13'
     - uses: pre-commit/action@2c7b3805fd2a0fd8c1884dcaebf91fc102a13ecd  #v3.0.1
       with:
         extra_args: --all-files --show-diff-on-failure
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index ace0d07..c458fa5 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -1,5 +1,5 @@
-# Generated from:
-# https://github.com/zopefoundation/meta/tree/master/config/pure-python
+# Generated with zope.meta (https://zopemeta.readthedocs.io/) from:
+# https://github.com/zopefoundation/meta/tree/master/src/zope/meta/pure-python
 name: tests
 
 on:
@@ -25,7 +25,6 @@ jobs:
         config:
         # [Python version, tox env]
         - ["3.11", "release-check"]
-        - ["3.9", "py39"]
         - ["3.10", "py310"]
         - ["3.11", "py311"]
         - ["3.12", "py312"]
@@ -43,12 +42,12 @@ jobs:
     if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
     name: ${{ matrix.os[0] }}-${{ matrix.config[1] }}
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
       with:
         persist-credentials: false
     - name: Install uv + caching
-      # astral/setup-uv@7
-      uses: astral-sh/setup-uv@3259c6206f993105e3a61b142c2d97bf4b9ef83d
+      # astral/setup-uv@8.1.0
+      uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b
       with:
         enable-cache: true
         cache-dependency-glob: |
@@ -57,11 +56,7 @@ jobs:
         python-version: ${{ matrix.config[0] }}
         github-token: ${{ secrets.GITHUB_TOKEN }}
     - name: Test
-      if: ${{ !startsWith(runner.os, 'Mac') }}
       run: uvx --with tox-uv tox -e ${{ matrix.config[1] }}
-    - name: Test (macOS)
-      if: ${{ startsWith(runner.os, 'Mac') }}
-      run: uvx --with tox-uv tox -e ${{ matrix.config[1] }}-universal2
     - name: Coverage
       if: matrix.config[1] == 'coverage'
       run: |
diff --git a/.gitignore b/.gitignore
index 1f321f5..188120b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,5 @@
-# Generated from:
-# https://github.com/zopefoundation/meta/tree/master/config/pure-python
+# Generated with zope.meta (https://zopemeta.readthedocs.io/) from:
+# https://github.com/zopefoundation/meta/tree/master/src/zope/meta/pure-python
 *.dll
 *.egg-info/
 *.profraw
@@ -28,5 +28,6 @@ lib64
 log/
 parts/
 pyvenv.cfg
+share/
 testing.log
 var/
diff --git a/.meta.toml b/.meta.toml
index 04360f6..32f5cc5 100644
--- a/.meta.toml
+++ b/.meta.toml
@@ -1,16 +1,17 @@
-# Generated from:
-# https://github.com/zopefoundation/meta/tree/master/config/pure-python
+# Generated with zope.meta (https://zopemeta.readthedocs.io/) from:
+# https://github.com/zopefoundation/meta/tree/master/src/zope/meta/pure-python
 [meta]
 template = "pure-python"
-commit-id = "72252845"
+commit-id = "ba10c93f"
 
 [python]
 with-pypy = false
 with-docs = true
 with-sphinx-doctests = true
 with-windows = true
-with-future-python = true
+with-future-python = false
 with-macos = false
+with-free-threaded-python = false
 
 [tox]
 use-flake8 = true
@@ -47,7 +48,7 @@ testenv-additional = [
     "    coverage combine",
     "    coverage html",
     "    coverage report -m --fail-under=100",
-    "depends = py39,py310,py311,py311-datetime,py312,py313,py314,coverage",
+    "depends = py310,py311,py311-datetime,py312,py313,py314,coverage",
     ]
 coverage-command = "pytest --cov=src --cov=tests --cov-report= tests {posargs}"
 coverage-setenv = [
@@ -55,7 +56,7 @@ coverage-setenv = [
     ]
 
 [coverage]
-fail-under = 97.2
+fail-under = 97.1
 
 [isort]
 additional-sources = "{toxinidir}/tests"
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index cbb2541..d2d5029 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,9 +1,9 @@
-# Generated from:
-# https://github.com/zopefoundation/meta/tree/master/config/pure-python
+# Generated with zope.meta (https://zopemeta.readthedocs.io/) from:
+# https://github.com/zopefoundation/meta/tree/master/src/zope/meta/pure-python
 minimum_pre_commit_version: '3.6'
 repos:
   - repo: https://github.com/pycqa/isort
-    rev: "7.0.0"
+    rev: "8.0.1"
     hooks:
     - id: isort
   - repo: https://github.com/hhatto/autopep8
@@ -12,14 +12,15 @@ repos:
     - id: autopep8
       args: [--in-place, --aggressive, --aggressive]
   - repo: https://github.com/asottile/pyupgrade
-    rev: v3.21.0
+    rev: v3.21.2
     hooks:
     - id: pyupgrade
-      args: [--py39-plus]
+      args: [--py310-plus]
   - repo: https://github.com/isidentical/teyit
     rev: 0.4.3
     hooks:
     - id: teyit
+      language_version: python3.13
   - repo: https://github.com/PyCQA/flake8
     rev: "7.3.0"
     hooks:
diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 034043e..f81cabf 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -1,5 +1,5 @@
-# Generated from:
-# https://github.com/zopefoundation/meta/tree/master/config/pure-python
+# Generated with zope.meta (https://zopemeta.readthedocs.io/) from:
+# https://github.com/zopefoundation/meta/tree/master/src/zope/meta/pure-python
 # Read the Docs configuration file
 # See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
 
diff --git a/CHANGES.rst b/CHANGES.rst
index eddc785..f567534 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -4,7 +4,10 @@ Changes
 8.2 (unreleased)
 ----------------
 
-- Nothing changed yet.
+- Move package metadata from setup.py to pyproject.toml.
+
+- Drop support for Python 3.9.
+
 
 8.1 (2025-10-19)
 ----------------
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 0ab12fe..ca517f4 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -1,6 +1,6 @@
 <!--
-Generated from:
-https://github.com/zopefoundation/meta/tree/master/config/pure-python
+Generated with zope.meta (https://zopemeta.readthedocs.io/) from:
+https://github.com/zopefoundation/meta/tree/master/src/zope/meta/pure-python
 -->
 # Contributing to zopefoundation projects
 
diff --git a/MANIFEST.in b/MANIFEST.in
index 7f0aa88..178479d 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,5 +1,5 @@
-# Generated from:
-# https://github.com/zopefoundation/meta/tree/master/config/pure-python
+# Generated with zope.meta (https://zopemeta.readthedocs.io/) from:
+# https://github.com/zopefoundation/meta/tree/master/src/zope/meta/pure-python
 include *.md
 include *.rst
 include *.txt
diff --git a/docs/conf.py b/docs/conf.py
index 1ce21d1..bb0d2ef 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -112,7 +112,6 @@
 # Intersphinx Mapping for Links between different Documentations
 intersphinx_mapping = {
     'python3': ('https://docs.python.org/3', None),
-    'python39': ('https://docs.python.org/3.9', None),
     'python310': ('https://docs.python.org/3.10', None),
     'python311': ('https://docs.python.org/3.11', None),
     'python312': ('https://docs.python.org/3.12', None),
diff --git a/docs/contributing/changes_from38to39.rst b/docs/contributing/changes_from38to39.rst
deleted file mode 100644
index a040b03..0000000
--- a/docs/contributing/changes_from38to39.rst
+++ /dev/null
@@ -1,5 +0,0 @@
-Changes from Python 3.8 to Python 3.9
--------------------------------------
-
-.. literalinclude:: ast/python3_9.ast
-   :diff: ast/python3_8.ast
diff --git a/docs/contributing/index.rst b/docs/contributing/index.rst
index 69909e4..67b4f84 100644
--- a/docs/contributing/index.rst
+++ b/docs/contributing/index.rst
@@ -98,7 +98,6 @@ A (modified style) Copy of all Abstract Grammar Definitions for the Python versi
 .. toctree::
    :maxdepth: 2
 
-   changes_from38to39
    changes_from39to310
    changes_from310to311
    changes_from311to312
@@ -241,7 +240,6 @@ Technical Backgrounds - Links to External Documentation
     * `Python 3.12 AST`_ (EOL 2028-10)
     * `Python 3.11 AST`_ (EOL 2027-10)
     * `Python 3.10 AST`_ (EOL 2026-10)
-    * `Python 3.9 AST`_ (EOL 2025-10)
 
   * `AST NodeVistiors Class`_
   * `AST NodeTransformer Class`_
@@ -269,8 +267,6 @@ Todos
 
 .. _`What's new in Python 3.10`: https://docs.python.org/3.10/whatsnew/3.10.html
 
-.. _`What's new in Python 3.9`: https://docs.python.org/3.9/whatsnew/3.9.html
-
 .. _`Status of Python Versions`: https://devguide.python.org/versions/
 
 .. _`Concept of Immutable Types and Python Example`: https://en.wikipedia.org/wiki/Immutable_object#Python
@@ -295,8 +291,6 @@ Todos
 
 .. _`Python 3.10 AST`: https://docs.python.org/3.10/library/ast.html#abstract-grammar
 
-.. _`Python 3.9 AST`: https://docs.python.org/3.9/library/ast.html#abstract-grammar
-
 .. _`AST NodeVistiors Class`: https://docs.python.org/3/library/ast.html#ast.NodeVisitor
 
 .. _`AST NodeTransformer Class`: https://docs.python.org/3/library/ast.html#ast.NodeTransformer
diff --git a/docs/index.rst b/docs/index.rst
index 7e617d8..1ce9733 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -15,7 +15,7 @@ RestrictedPython is not a sandbox system or a secured environment, but it helps
 Supported Python versions
 =========================
 
-RestrictedPython supports CPython 3.9 up to 3.14.
+RestrictedPython supports CPython 3.10 up to 3.14.
 It does _not_ support PyPy or other alternative Python implementations.
 
 Contents
diff --git a/pyproject.toml b/pyproject.toml
index 7b94ef6..c66658e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,5 @@
-# 
-# Generated from:
-# https://github.com/zopefoundation/meta/tree/master/config/pure-python
-
+# Generated with zope.meta (https://zopemeta.readthedocs.io/) from:
+# https://github.com/zopefoundation/meta/tree/master/src/zope/meta/pure-python
 [build-system]
 requires = [
     "setuptools >= 78.1.1,< 81",
@@ -9,12 +7,63 @@ requires = [
 ]
 build-backend = "setuptools.build_meta"
 
+
+[project]
+name = "RestrictedPython"
+version = "8.2.dev0"
+description = "RestrictedPython is a defined subset of the Python language which allows to provide a program input into a trusted environment."
+license = "ZPL-2.1"
+classifiers = [
+    "Development Status :: 6 - Mature",
+    "Programming Language :: Python",
+    "Operating System :: OS Independent",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
+    "Programming Language :: Python :: 3.14",
+    "Programming Language :: Python :: Implementation :: CPython",
+    "Topic :: Security",
+]
+dynamic = ["readme"]
+requires-python = ">=3.10, <3.15"
+authors = [
+    {name = "Zope Foundation and contributors",email = "zope-dev@zope.dev"},
+]
+maintainers = [
+    {name = "Plone Foundation and contributors",email = "zope-dev@zope.dev"},
+]
+keywords = [
+    "restricted",
+    "execution",
+    "security",
+    "untrusted",
+    "code",
+]
+
+[project.optional-dependencies]
+test = [
+    "pytest",
+    "pytest-mock",
+]
+docs = [
+    "Sphinx",
+    "furo",
+]
+
+[project.urls]
+Documentation = "https://restrictedpython.readthedocs.io/"
+Issues = "https://github.com/zopefoundation/RestrictedPython/issues"
+Source = "https://github.com/zopefoundation/RestrictedPython"
+Changelog = "https://github.com/zopefoundation/RestrictedPython/blob/master/CHANGES.rst"
+
 [tool.coverage.run]
 branch = true
 source = ["RestrictedPython"]
 
 [tool.coverage.report]
-fail_under = 97.2
+fail_under = 97.1
 precision = 2
 ignore_errors = true
 show_missing = true
@@ -31,3 +80,7 @@ exclude_lines = [
 
 [tool.coverage.html]
 directory = "parts/htmlcov"
+
+[tool.setuptools.dynamic]
+readme = {file = ["README.rst", "CHANGES.rst"]}
+
diff --git a/setup.cfg b/setup.cfg
index ae12100..3b11c8e 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,5 +1,5 @@
-# Generated from:
-# https://github.com/zopefoundation/meta/tree/master/config/pure-python
+# Generated with zope.meta (https://zopemeta.readthedocs.io/) from:
+# https://github.com/zopefoundation/meta/tree/master/src/zope/meta/pure-python
 
 [flake8]
 doctests = 1
diff --git a/setup.py b/setup.py
index 9217802..2978e06 100644
--- a/setup.py
+++ b/setup.py
@@ -13,57 +13,8 @@
 ##############################################################################
 """Setup for RestrictedPython package"""
 
-import os
-
-from setuptools import find_packages
 from setuptools import setup
 
 
-def read(*rnames):
-    with open(os.path.join(os.path.dirname(__file__), *rnames)) as f:
-        return f.read()
-
-
-setup(name='RestrictedPython',
-      version='8.2.dev0',
-      url='https://github.com/zopefoundation/RestrictedPython',
-      license='ZPL-2.1',
-      description=(
-          'RestrictedPython is a defined subset of the Python language which '
-          'allows to provide a program input into a trusted environment.'),
-      long_description=read('README.rst') + '\n' + read('CHANGES.rst'),
-      long_description_content_type='text/x-rst',
-      classifiers=[
-          'Development Status :: 6 - Mature',
-          'License :: OSI Approved :: Zope Public License',
-          'Programming Language :: Python',
-          'Operating System :: OS Independent',
-          'Programming Language :: Python :: 3',
-          'Programming Language :: Python :: 3.9',
-          'Programming Language :: Python :: 3.10',
-          'Programming Language :: Python :: 3.11',
-          'Programming Language :: Python :: 3.12',
-          'Programming Language :: Python :: 3.13',
-          'Programming Language :: Python :: 3.14',
-          'Programming Language :: Python :: Implementation :: CPython',
-          'Topic :: Security',
-      ],
-      keywords='restricted execution security untrusted code',
-      author='Zope Foundation and Contributors',
-      author_email='zope-dev@zope.dev',
-      project_urls={
-          "Documentation": "https://restrictedpython.readthedocs.io/",
-          "Source": "https://github.com/zopefoundation/RestrictedPython",
-          "Tracker":
-          "https://github.com/zopefoundation/RestrictedPython/issues",
-      },
-      packages=find_packages('src'),
-      package_dir={'': 'src'},
-      install_requires=[],
-      python_requires=">=3.9, <3.15",
-      extras_require={
-          'test': ['pytest', 'pytest-mock'],
-          'docs': ['Sphinx', 'furo'],
-      },
-      include_package_data=True,
-      zip_safe=False)
+# See pyproject.toml for package metadata
+setup()
diff --git a/src/RestrictedPython/_compat.py b/src/RestrictedPython/_compat.py
index 2c5641e..63c7fa1 100644
--- a/src/RestrictedPython/_compat.py
+++ b/src/RestrictedPython/_compat.py
@@ -3,7 +3,6 @@
 
 
 _version = sys.version_info
-IS_PY310_OR_GREATER = _version.major == 3 and _version.minor >= 10
 IS_PY311_OR_GREATER = _version.major == 3 and _version.minor >= 11
 IS_PY312_OR_GREATER = _version.major == 3 and _version.minor >= 12
 IS_PY313_OR_GREATER = _version.major == 3 and _version.minor >= 13
diff --git a/src/RestrictedPython/transformer.py b/src/RestrictedPython/transformer.py
index fa71e48..c030bb7 100644
--- a/src/RestrictedPython/transformer.py
+++ b/src/RestrictedPython/transformer.py
@@ -361,55 +361,6 @@ def gen_none_node(self):
     def gen_del_stmt(self, name_to_del):
         return ast.Delete(targets=[ast.Name(name_to_del, ast.Del())])
 
-    def transform_slice(self, slice_):
-        """Transform slices into function parameters.
-
-        ast.Slice nodes are only allowed within a ast.Subscript node.
-        To use a slice as an argument of ast.Call it has to be converted.
-        Conversion is done by calling the 'slice' function from builtins
-        """
-
-        if isinstance(slice_, ast.expr):
-            # Python 3.9+
-            return slice_
-
-        elif isinstance(slice_, ast.Index):
-            return slice_.value
-
-        elif isinstance(slice_, ast.Slice):
-            # Create a python slice object.
-            args = []
-
-            if slice_.lower:
-                args.append(slice_.lower)
-            else:
-                args.append(self.gen_none_node())
-
-            if slice_.upper:
-                args.append(slice_.upper)
-            else:
-                args.append(self.gen_none_node())
-
-            if slice_.step:
-                args.append(slice_.step)
-            else:
-                args.append(self.gen_none_node())
-
-            return ast.Call(
-                func=ast.Name('slice', ast.Load()),
-                args=args,
-                keywords=[])
-
-        elif isinstance(slice_, ast.ExtSlice):
-            dims = ast.Tuple([], ast.Load())
-            for item in slice_.dims:
-                dims.elts.append(self.transform_slice(item))
-            return dims
-
-        else:  # pragma: no cover
-            # Index, Slice and ExtSlice are only defined Slice types.
-            raise NotImplementedError(f"Unknown slice type: {slice_}")
-
     def check_name(self, node, name, allow_magic_methods=False):
         """Check names if they are allowed.
 
@@ -932,7 +883,7 @@ def visit_Subscript(self, node):
         if isinstance(node.ctx, ast.Load):
             new_node = ast.Call(
                 func=ast.Name('_getitem_', ast.Load()),
-                args=[node.value, self.transform_slice(node.slice)],
+                args=[node.value, node.slice],
                 keywords=[])
 
             copy_locations(new_node, node)
@@ -953,24 +904,12 @@ def visit_Subscript(self, node):
             raise NotImplementedError(
                 f"Unknown ctx type: {type(node.ctx)}")
 
-    def visit_Index(self, node):
-        """
-
-        """
-        return self.node_contents_visit(node)
-
     def visit_Slice(self, node):
         """
 
         """
         return self.node_contents_visit(node)
 
-    def visit_ExtSlice(self, node):
-        """
-
-        """
-        return self.node_contents_visit(node)
-
     # Comprehensions
 
     def visit_ListComp(self, node):
diff --git a/tests/test_NamedExpr.py b/tests/test_NamedExpr.py
index 2da22ad..1fc393b 100644
--- a/tests/test_NamedExpr.py
+++ b/tests/test_NamedExpr.py
@@ -23,7 +23,7 @@ def test_no_private_target(self):
     def test_simple_only(self):
         # we test here that only a simple variable is allowed
         # as assignemt expression target
-        # Currently (Python 3.8, 3.9), this is enforced by the
+        # This is currently enforced by the
         # Python concrete syntax; therefore, some (``ast``) trickery is
         # necessary to produce a test for it.
         class TransformNamedExprTarget(NodeTransformer):
diff --git a/tests/test_compile.py b/tests/test_compile.py
index c4ea7de..379e71f 100644
--- a/tests/test_compile.py
+++ b/tests/test_compile.py
@@ -8,7 +8,6 @@
 from RestrictedPython import compile_restricted_eval
 from RestrictedPython import compile_restricted_exec
 from RestrictedPython import compile_restricted_single
-from RestrictedPython._compat import IS_PY310_OR_GREATER
 from RestrictedPython._compat import IS_PY311_OR_GREATER
 from tests.helper import restricted_eval
 
@@ -40,10 +39,7 @@ def test_compile__compile_restricted_invalid_mode_input():
 def test_compile__invalid_syntax():
     with pytest.raises(SyntaxError) as err:
         compile_restricted(INVALID_ASSINGMENT, '<string>', 'exec')
-    if IS_PY310_OR_GREATER:
-        assert "SyntaxError: cannot assign to literal here." in str(err.value)
-    else:
-        assert "cannot assign to literal at statement:" in str(err.value)
+    assert "SyntaxError: cannot assign to literal here." in str(err.value)
 
 
 def test_compile__compile_restricted_exec__1():
@@ -118,15 +114,10 @@ def no_exec():
 def test_compile__compile_restricted_exec__10():
     """It is a SyntaxError to use the `exec` statement."""
     result = compile_restricted_exec(EXEC_STATEMENT)
-    if IS_PY310_OR_GREATER:
-        assert (
-            'Line 2: SyntaxError: Missing parentheses in call to \'exec\'. Did'
-            ' you mean exec(...)? at statement: "exec \'q = 1\'"',
-        ) == result.errors
-    else:
-        assert (
-            'Line 2: SyntaxError: Missing parentheses in call to \'exec\' at'
-            ' statement: "exec \'q = 1\'"',) == result.errors
+    assert (
+        'Line 2: SyntaxError: Missing parentheses in call to \'exec\'. Did'
+        ' you mean exec(...)? at statement: "exec \'q = 1\'"',
+    ) == result.errors
 
 
 FUNCTION_DEF = """\
diff --git a/tests/test_compile_restricted_function.py b/tests/test_compile_restricted_function.py
index 0bf0437..d1454db 100644
--- a/tests/test_compile_restricted_function.py
+++ b/tests/test_compile_restricted_function.py
@@ -3,7 +3,6 @@
 from RestrictedPython import PrintCollector
 from RestrictedPython import compile_restricted_function
 from RestrictedPython import safe_builtins
-from RestrictedPython._compat import IS_PY310_OR_GREATER
 
 
 def test_compile_restricted_function():
@@ -211,15 +210,9 @@ def test_compile_restricted_function_handle_SyntaxError():
     )
 
     assert result.code is None
-    if IS_PY310_OR_GREATER:
-        assert result.errors == (
-            "Line 1: SyntaxError: '(' was never closed at statement: 'a('",
-        )
-    else:
-        assert result.errors == (
-            "Line 1: SyntaxError: unexpected EOF while parsing at statement:"
-            " 'a('",
-        )
+    assert result.errors == (
+        "Line 1: SyntaxError: '(' was never closed at statement: 'a('",
+    )
 
 
 def test_compile_restricted_function_invalid_syntax():
@@ -237,11 +230,6 @@ def test_compile_restricted_function_invalid_syntax():
     assert len(result.errors) == 1
     error_msg = result.errors[0]
 
-    if IS_PY310_OR_GREATER:
-        assert error_msg.startswith(
-            "Line 1: SyntaxError: cannot assign to literal here. Maybe "
-        )
-    else:
-        assert error_msg.startswith(
-            "Line 1: SyntaxError: cannot assign to literal at statement:"
-        )
+    assert error_msg.startswith(
+        "Line 1: SyntaxError: cannot assign to literal here. Maybe "
+    )
diff --git a/tox.ini b/tox.ini
index 4015b3a..3439cf4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,11 +1,10 @@
-# Generated from:
-# https://github.com/zopefoundation/meta/tree/master/config/pure-python
+# Generated with zope.meta (https://zopemeta.readthedocs.io/) from:
+# https://github.com/zopefoundation/meta/tree/master/src/zope/meta/pure-python
 [tox]
 minversion = 3.18
 envlist =
     release-check
     lint
-    py39
     py310
     py311
     py312
@@ -20,13 +19,11 @@ envlist =
 usedevelop = true
 package = wheel
 wheel_build_env = .pkg
-pip_pre = py314: true
 deps =
     setuptools >= 78.1.1,< 81
     datetime: DateTime
     -cconstraints.txt
     pytest-cov
-    Sphinx
 setenv =
     COVERAGE_FILE=.coverage.{envname}
 commands =
@@ -52,7 +49,7 @@ commands =
     coverage combine
     coverage html
     coverage report -m --fail-under=100
-depends = py39,py310,py311,py311-datetime,py312,py313,py314,coverage
+depends = py310,py311,py311-datetime,py312,py313,py314,coverage
 
 [testenv:setuptools-latest]
 basepython = python3
@@ -72,12 +69,12 @@ deps =
     twine
     build
     check-manifest
-    check-python-versions >= 0.20.0
+    check-python-versions >= 0.24.2
     wheel
 commands_pre =
 commands =
     check-manifest
-    check-python-versions --only setup.py,tox.ini,.github/workflows/tests.yml
+    check-python-versions --only pyproject.toml,setup.py,tox.ini,.github/workflows/tests.yml
     python -m build --sdist --no-isolation
     twine check dist/*
 
@@ -108,7 +105,6 @@ deps =
     datetime: DateTime
     -cconstraints.txt
     pytest-cov
-    Sphinx
 setenv =
     COVERAGE_FILE=.coverage
 commands =