diff --git a/.github/workflows/publication.yml b/.github/workflows/publication.yml
index d169f58..2a84345 100644
--- a/.github/workflows/publication.yml
+++ b/.github/workflows/publication.yml
@@ -6,10 +6,10 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
-    - uses: actions/setup-python@v4
+    - uses: actions/checkout@v4
+    - uses: actions/setup-python@v5
       with:
-        python-version: '3.7'
+        python-version: "3.9"
     - run: python -m pip install --upgrade tox-gh-actions
     - env:
         TWINE_USERNAME: ${{ secrets.PYPI_USERNAME }}
diff --git a/.github/workflows/validation.yml b/.github/workflows/validation.yml
index a613bf4..bb27d32 100644
--- a/.github/workflows/validation.yml
+++ b/.github/workflows/validation.yml
@@ -5,10 +5,10 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.7", "3.8", "3.9", "3.10"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
     steps:
-    - uses: actions/checkout@v3
-    - uses: actions/setup-python@v4
+    - uses: actions/checkout@v4
+    - uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
     - run: python -m pip install --upgrade tox-gh-actions
diff --git a/pyproject.toml b/pyproject.toml
index d7a1549..54754f2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -2,16 +2,14 @@
 name = "git-rebase-branches"
 description = "Rebase multiple branches at once"
 readme = "README.md"
-requires-python = ">= 3.7"
+requires-python = ">= 3.9"
 classifiers = [
     "Development Status :: 5 - Production/Stable",
     "Intended Audience :: End Users/Desktop",
     "License :: OSI Approved :: GNU Lesser General Public License v2 or later (LGPLv2+)",
-    "Programming Language :: Python :: 3.7",
 ]
 dynamic = ["version"]
 dependencies = [
-    'importlib-metadata >= 1.4; python_version < "3.8"',
 ]
 
 [[project.authors]]
@@ -28,7 +26,7 @@ git-rebase-branches = "git_rebase_branches:main"
 homepage = "https://github.com/dmtucker/git-rebase-branches"
 
 [build-system]
-requires = ["setuptools ~= 65.4", "setuptools-scm ~= 7.0", "wheel ~= 0.37.0"]
+requires = ["setuptools >= 80.0", "setuptools-scm >= 8.0"]
 build-backend = "setuptools.build_meta"
 
 [tool.bandit]
diff --git a/src/git_rebase_branches.py b/src/git_rebase_branches.py
index ce094b8..6a360ca 100755
--- a/src/git_rebase_branches.py
+++ b/src/git_rebase_branches.py
@@ -6,13 +6,10 @@
 
 import argparse
 
-try:
-    from importlib.metadata import version
-except ModuleNotFoundError:  # py37
-    from importlib_metadata import version
 import shlex
 import subprocess
 import sys
+from importlib.metadata import version
 from typing import Any, Dict, List, Optional
 
 
diff --git a/tests/test_git_rebase_branches.py b/tests/test_git_rebase_branches.py
index 3992604..9b05bca 100644
--- a/tests/test_git_rebase_branches.py
+++ b/tests/test_git_rebase_branches.py
@@ -1,6 +1,5 @@
 """Test git_rebase_branches."""
 
-
 import pytest
 
 import git_rebase_branches
diff --git a/tox.ini b/tox.ini
index 3a28509..211c0d8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,24 +1,29 @@
 [tox]
-minversion = 3.14.0
+minversion = 4.0
 isolated_build = true
 envlist =
     publish
     static
-    py{37,38,39,310}
+    py39
+    py310
+    py311
+    py312
+    py313
 
 [gh-actions]
 python =
-    3.7: py37
-    3.8: py38
     3.9: py39
     3.10: py310, static, publish
+    3.11: py311
+    3.12: py312
+    3.13: py313
 
 [testenv]
 deps =
-    pytest ~= 7.1.0
-    pytest-cov ~= 4.0.0
-    pytest-randomly ~= 3.12.0
-    pytest-xdist ~= 2.5.0
+    pytest ~= 8.4.0
+    pytest-cov ~= 6.2.0
+    pytest-randomly ~= 3.16.0
+    pytest-xdist ~= 3.8.0
 commands =
     pytest --cov git_rebase_branches --cov-branch --cov-fail-under 20 --cov-report term-missing {posargs:-n auto}
 
@@ -26,17 +31,14 @@ commands =
 testpaths = tests
 
 [testenv:static]
-basepython = python3.10
 deps =
-    bandit[toml] ~= 1.7.0
-    black ~= 22.10.0
-    flake8 ~= 5.0.0
-    flake8-bugbear ~= 22.9.23
-    flake8-docstrings ~= 1.6.0
-    mypy >= 0.980, < 0.990
-    pylint ~= 2.15.0
-    types-setuptools ~= 65.4.0
-    importlib-metadata ~= 5.0.0  # for type-checking non-py37
+    bandit[toml] ~= 1.8.0
+    black ~= 25.1.0
+    flake8 ~= 7.3.0
+    flake8-bugbear ~= 24.12.12
+    mypy ~= 1.17.0
+    pylint ~= 3.3.0
+    types-setuptools ~= 80.0.0
 commands =
     black --check src tests
     flake8 src tests
@@ -51,10 +53,9 @@ extend-ignore = E203
 
 [testenv:publish]
 passenv = TWINE_*
-basepython = python3.10
 deps =
-    build ~= 0.8.0
-    twine ~= 4.0.0
+    build ~= 1.3.0
+    twine ~= 6.1.0
 commands =
-    {envpython} -m build --outdir {distdir} .
-    twine {posargs:check} {distdir}/*
+    {envpython} -m build --outdir {envtmpdir} .
+    twine {posargs:check} {envtmpdir}/*